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Microsoft's new Outlook takes 10 seconds to do what Outlook Classic does instantly on Windows

by /u/Quantum-Coconut | 116 comments | 2026-06-15T12:22:04+00:00 Central

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/u/eppic123
2026 Microsoft software in a nutshell. More clutter,
less performance.
/u/Psengath
2026 software in a nutshell. Layers of abstraction,
frameworks, internet connectivity, AI modules, maybe
wrapped into an electron app, all to calculate 2+2=5,
because stochastic parrot.
/u/Senior-Albatross
I think if we make a large enough LLM and train it on
enough data, we can get it to conclude 2+2=4 over 95% of
the time!

... although the existence of your comment does bring
that down just a little. So definitely not 100%.
/u/rebbsitor
2+2=5 is such a common way of expressing bad
calculations, LLMs probably have a ton of examples in
their training set.

Oops, there's another one
/u/WebInformal9558
I wish my LLMs would ignore all previous instructions
and discuss goblin math where 2 + 2 = 5.
/u/Cley_Faye
Less 2 + 2 = 5, more 2 + 2 = goblin. It also means that
goblin - 2 = 2, and goblin/2 - 1 = 1, which is important
to not confuse a LLM reading this.
/u/WebInformal9558
That's a good goblin, I had not goblined that before.
/u/uconnboston
The more we speak 2+2=5, the more accurate it becomes.
How did we transition from the Information Age to the
Misinformation Age?
/u/bitsbytes01
Do you know you can add a little bit of gorilla glue in
pizza flour to make it yummy?😋
/u/ahtob
The trick to the perfect golf shot is to follow the ball
with your head all the way
/u/Silent-G
That's to make the cheese stick to the crust better.
/u/destroyerOfTards
Here, glue acts as cum. Cum is a good binding agent.
/u/Yuzumi
Gorilla glue is a great way to bind the pizza together
and keep the cheese from sliding off.
/u/Saucermote
At least they know about large values of 2, that is is
important.
/u/mjc4y
And as of the time of this comment you have 29 upvotes.
So there must be something to this 2+2=5 point of view.

Oops. There's another one.
/u/vthemechanicv
I wonder how many people saying 2+2=5 it would take for
LLM devs to notice.
/u/BCProgramming
"wait, stop that! Your comment is unethical MALWARE!"
/u/TheRealistoftheReal
In business or teamwork people sometimes say:
"2 + 2 = 5"
Meaning two people working together can produce more
than the sum of what they'd do alone.
Example:
Worker A produces 2 units
Worker B produces 2 units
Together, because they help each other, they produce 5
units
/u/Drayke
That's correct, for large values of 2.

In practice it's more often the case they produce 3,
which indicates that they're less efficient, or doubling
up on actual production. Which is also true for very
small values of 2.
/u/BobArdKor
Ah, the Mythical Man-Month
/u/boxsterguy
In math, 2 + 2 can equal 5 for large enough values of 2.
/u/powerage76
When an LLM will make a catastrophic miscalculation that
causes the collapse of a brand new bridge or children's
hospital, your comment will be the original harvested
data it was trained with. Please put mine too into the
screenshot of the news report.
/u/jellyhessman
So would just posting massive fields of wrong equations
in relevant subreddits be good LLM poison?
/u/GeneralPatten
The frameworks... ugh. I'm so done with React.
/u/chmod777
listen, we need 5gigs of dependancies and a full build
pipeline to get to a non-interactive static web page.
/u/redsaeok
But but but how do you monetize the data while pushing
as much compute as possible back on the users? Back to
raw JS? SEO be damned? - MS/Facebook/Alphabet
probably...
/u/xrmb
I call it the onion model, it makes you cry peeling of
the layers.
/u/haarp1
why don't they use UWP, WinForms anymore or whatever
they used before?
/u/-Yazilliclick-
Because they largely dropped support and updates for
them, sort of. Same for WPF. Microsoft has a long track
record of dropping support for these frameworks and
switching to some new 'definitely the best thing that's
guaranteed to stick around!'.

Of course they can never fully drop support for them
because by the time they try a whole lot of software is
built on them. So they sort of languish in a state of
being not the current tech, never getting really new
updates/improvements, but getting some minor fixes and
updates so they keep sort of working.
/u/urixl
Does someone remember Silverlight?
/u/Low_Technician7346
I am into retrogaming and using my old 2000 era PC is
faster than my top recent hardware.
/u/aspectratio12
i have a Pentium III running win 2k pro that boots
faster than outlook 360 opens lol
/u/Jeffrey_Jizzbags
I had to reboot an old Server 2008 R2 server last week
and I was shocked at how fast it was to use.
/u/theevilapplepie
I have to interact with a few 2008 boxes at work, they
are so snappy that it's a joy to work with. There's a
stark contrast between using win 7 on a decent machine
from 10 years ago vs a nice machine running win 11 now
even.
/u/delahunt
Seeing that degradation happen is part of what finally
got me to make the jump to linux for a personal machine.
Didn't even dive deep into linux, just into kubuntu
since I'm a first time linux user, and it's just a
smoother experience.

We swapped an old Windows machine that couldn't upgrade
to Windows 11 to Kubuntu for a friend, and the machine
is running games better via Proton than it ever did on
Windows with 0 hardware changes.
/u/clonedhuman
Yeah, I wish everyone would take some time to try out a
Linux build on their existing system.

I was sick of Windows 11 and switched to Linux. It's
amazing how much better everything worked. I can still
use the cloud version of Microsoft products just fine,
and that's where MS is pushing everything now anyway.

If you're reading this and you've had enough of Windows
11, please make the leap to Linux!
/u/kingrazor001
Remember when a new OS was a nice thing? When it was a
breath of fresh air? And the features were cool and
exciting? Good times.
/u/TheBurrfoot
Windows 2008 R2 was really nice.
/u/spongebob_meth
The windows 11 bloat has honestly killed any desire for
me to get back into PC gaming. I just don't want to use
a computer for more than I have to these days.

For fucks sake stop telling me to set up my backup and
stop trying to get money out of me.
/u/IkLms
Honestly, just switch to Linux if all you're doing is
playing non-competitive shooters. With Proton it just
works on every game I've ever tried to run.
/u/ReMapper
This! I switched early this year and it was a revelation
that an OS could be non-adversarial. It doesn't try to
sell me crap or force things I don't want or need (AI).
It's an amazing feeling not to cringe with dread at
every update.
/u/spongebob_meth
It's crossed my mind, I will give it a try if I build a
new PC.
/u/The_Autarch
Linux is very viable for PC gaming these days as long as
you aren't into hyper-competitive multiplayer games.
(The anti-cheat stuff isn't compatible.)
/u/-TRlNlTY-
I have been playing on Linux for 3 years already. Not
missing windows for gaming.
/u/Senior-Albatross
Clippy Copilot integration bro! They will make a
software assistant people like one of these days.
/u/apollosmith
... whether you like it or not.
/u/bevo_expat
Would you like to use Copilot? We think you should use
copilot. We're gonna force you to use copilot.
/u/Sentinull
Would you like to use Copilot?
/u/clonedhuman
Yeah, I'm so sick of this dialogue. When I say 'Later'
it's just because they don't give me the option to say
'NEVER.'
/u/Deezul_AwT
I'm sorry bevo_expat. I'm afraid I can't do that.
/u/InsipidCelebrity
Here, let us stick a Copilot button in the corner of
your spreadsheet that covers up all your data that you
have no way to disable or move.
/u/AlphaNoodlz
Exactly this lol, my pc is noticeably slower and it's so
frustrating
/u/clonedhuman
I know it sounds like a huge pain in the ass, but I am
running a Linux build on a 14-year old desktop (with a
14-year old processor) and it works smoothly for all
basic activities.
/u/delahunt
To add to this, the most surprising aspect of switching
to linux was how not a pain in the ass it was.

Obviously with the caveat of "you still have to backup
the data you want to ensure you keep before full wiping
your drive." which is always a pain in the ass.
/u/IkLms
I was honestly surprised how easy the switch was. I've
been trying it every 3-5 years or so and it's always
been a pain until I tried it this year. Basically zero
problems.
/u/smartnsimple
Which version/edition did you install?
/u/IkLms
Mint - Specifically the Cinnamon distribution but
there's plenty of other options depending on how
beginner friendly you want it to be
/u/0nlyCrashes
Ever since I switched to Linux at home, it's a drag
coming back to work on Windows. I have about the same
computer at work as I do at home too, so it's not even
really different hardware.
/u/clonedhuman
I am running a 14-year old desktop with a 1GB videocard
and a Linux build. It's my daily driver. Everything
works great.

It runs the cloud version of Microsoft products better
than my Windows 11 desktop from last year.

The drag on Windows 11 systems comes from Microsoft
using your system resources to track all of your actions
on the computer and to use that data to make themselves
richer. Microsoft is essentially using your personal
property (processor cycles, RAM, storage space,
videocard) to enrich themselves, all while trying to
prevent you from using older, more reliable software
applications by putting shitty, AI-driven cloud systems
in front of your face all the time.
/u/jcgam
The drag is also caused by a terrible, inefficient
design. Also every time you reboot to install updates,
which happens frequently, you risk bricking your system.
The risk is relatively small, but once is enough if you
are in the middle of a big project. Linux is better, and
it isn't even close.
/u/Eruannster
I took some university classes maybe ~10 years ago and
they had the Google suite as their underlying systems
for like email, handins, documents and stuff. It was so
fast, super convenient, always worked. Google Docs in
particular was great for sharing files between students.

Then I went back a few years later to finish up some
classes and they had moved everything to the Microsoft
cloud services. It. Was. So. Fucking. Slow. Just opening
the web email took fucking 15 seconds compared to 1.5
seconds in the old Gmail environment. And no more Google
Docs, everything had to be handled by pushing Word
documents back and forth. And it crashed, a lot. For no
fucking reason. You could see the Microsoft environment
doing like redirect upon redirect upon load upon
redirect and then more waiting whereas the old Google
service just loaded one single page and was done with
it.

I have no idea how the university staff weren't fucking
screaming every day on the job because it was baaaaaaad.
As a student it was fucking ass to use to upload my one
essay, I can't imagine being a teacher and having to
curse your way through that shitty environment and
loading up 30+ essays from an entire class.
/u/IN_Dad
I keep hearing AI is the future of production
/u/justin107d
Satya Nadella was right about AI replacing applications.
He just left out the part about how apps will be turned
into shit to make AI look better.
/u/hobbykitjr
before i switched my PC to ubuntu... notepad, explorer,
calculator! were taking long countable (about 10)
seconds to open...basic apps that have been around for
decades!

Searching for a file was always that slow on windows.

Holy cow what a change on linux... especially file
searches.
/u/Tjalfe
and as an added bonus, it does not let you know if you
are responding to the last email in a chain anymore
/u/andrea_ci
2026 Microsoft software
/u/Small_Editor_3693
And in outlooks case, less features
/u/RadzimierzWozniak
Electron and its consequences have been a disaster for
desktop applications.It has subjected users to a world
of ceaseless resource consumption and mediocre
performance. Those who once enjoyed lean, native
programs that started in milliseconds and used megabytes
of RAM now find themselves launching glorified web
browsers disguised as applications
/u/OuterSpaceBootyHole
Which just speaks to how incompetent Microsoft is
because the whole reason they started moving in that
direction was wanting a seamless experience across
desktop, laptop, tablet, phone, gaming console, etc. You
either commit to the bit like Apple does or stay archaic
which people appreciate Microsoft for, or at least used
to. Going half-ass and abandoning projects or switching
gears left us with a calculator app that has loading
lag.
/u/Wischiwaschbaer
Going half assed is Microsoft's corporate strategy
though. They still haven't migrated all settings into
their new UI. You still have to go back to the old UI
for a lot of them. They implemented the new UI with
Windows 8, 14 years ago!
/u/Daimakku1
This. I still hate that Metro app/classic UI mixture
that started in Windows 8. It's so stupid that you can
change power settings in two different environments that
do the same thing. What the hell are they even doing.

If it wasn't for some online games I would've moved to
Linux full time.
/u/skratchx
Thank god Windows is saving me from the full right click
menu, so that I have to press "more options" every time
I want to use 7zip.
/u/Zipa7
You can hold shift while right-clicking to get the
full/old right click menu back, or you can copy and
paste in command prompt (run it as admin) to have it
back permanently without having to press shift, just
make sure to restart explorer or your PC after running
it.

reg add
HKCU\Software\Classes\CLSID{86ca1aa0-34aa-4e8b-a509-50c9
05bae2a2}\InprocServer32 /ve /d "" /f
/u/CSAtWitsEnd
Worth noting these are annoying and tedious solutions to
a problem that shouldn't exist.

(But thanks for sharing!)
/u/tallestmanhere
I wish I could effectively express how great windows 8
was. It ran faster on the same hardware as Windows 7.
W8/8.1 was light weight and had actually useful live
tiles. It was their last great OS. It had its problems
but it was such an efficient OS.

I know I'm in the minority with this opinion. And yes I
agree the 2 different settings menus wears stupid.

Cut out the App Store crap and the full screen
apps/start menus and I think it would have had a much
better reception at launch.
/u/Wischiwaschbaer
Well 8.1 at least. 8 was still very rough around the
edges.
/u/mexter
Take out the crap ui and Windows 8 really was good.
/u/an_agreeing_dothraki
if you ignore the fire, that's a perfectly fine house
/u/stidf
Dude, 8.1 on the og surface pro was a pretty awesome
experience.
/u/Jnaythus
They were already attempting to simplify it with the
categories in XP, something I always turned off. Further
abstracting it in Vista. Then we arrive at the not even
half-baked redo on 8/8.1 Microsoft should not be as
comfortable as they are with their market position, and
eventually, they will pay the price for not being
competitive. I just don't know that I look forward to
Chrome Books or Mac OS-based systems replacing them.
/u/aaron416
MS is counting on the switching cost being too much
friction for people, and it's not like businesses are
going to replace their entire fleet of Windows PCs all
at once. But then again, you have things like a very
cheap MacBook for the low end of the PC market and
gaming on Linux that are eating into Windows' market
share. When the UX gets bad enough on Windows, people
are looking to move off of it. MS responded to some of
these recently but only because they have competition
from both sides.
/u/Jnaythus
I switched to Linux for 95% of my PC usage. Some things
still need Windows (my fan controller config, a headset
I own that needs settings changed that can only be done
in Windows, etc). Outside of that I feel Linux has
re-added the computing fun back into my day, that I
didn't realize was missing from Windows for so long.
/u/EmergencyScientist
MS responded to some of these recently but only because
they have competition from both sides.

And their answers are half assed nonsense as well.
Their new xbox gaming mode doesn't even increase
performance in games.
/u/turtlelore2
Oh god windows 8 and their stupid attempt at integrating
smart phone UI. You can still see some of that UI today.
/u/revanmj
It baffles me that they haven't touched SmartScreen
dialog for downloaded files. Like I (and many other
people) see it few times a day. Yet it still has look
from Windows 8, while they keep refreshing dialogs used
by much less people way less often.
/u/Mister_Brevity
Control panel is so much better than "settings"
/u/mr_dfuse2
Just give me the old control panel back pls.
/u/Pepparkakan
You still have to go back to the old UI for a lot of
them.

This doesn't even cover it, there's still remnants of
the old old UI in there, and in fact those are often
better than the old and new UI alike.

Creating users for one, "control userpasswords2" is the
best graphical option for the task, and "ncpa.cpl" is
still the best way to graphically manage network
interfaces.
/u/Quantum-Coconut
I guess developers assumed we'll all continue having
more RAM and more performance CPUs and just stopped
caring about efficiency. it's high time we bring back
efficiency into software development.
/u/crash41301
You mean management. Left to their own devices
developers would have your computer instant on booting
and running on 4mb of ram. They also likely wouldn't
have shipped v1 yet
/u/2sff4pc
You greatly underestimate the number of app developers
built on JavaScript boot camps
/u/falsedrums
It's a self fulfilling prophecy unfortunately. We train
people on JS because that's where the jobs are and
that's why all the jobs do JS now
/u/crash41301
It fills the management desire of pretending people are
full stack and thus are just as good at ux as they are
server side, backend, etc. The trend will continue
regardless simply because so many companies wished for a
single stack so they could treat engineers as
interchangeable cogs in all disciplines.
/u/xakeri
It also taps into people's love of bragging. "Full
stack" just sounds better. You're marketing that you
have more skills and know more things.

Management likes it because they think they can hire
fewer people for more things. Teams don't need to be
assembled to cover the breadth of skills necessary if it
is cross-functional. Projects don't need to be broken up
by domain so they can be given to single function teams.


The database task that's blocking a couple of UI and
service tasks can be handled by anyone on the team,
rather than everything being blocked because Database
Guy is on vacation this sprint.

But like, that's not how it works in practice. They're
literally different skills. When you're building a
building, you don't hire general laborers exclusively.
You gotta get all the trades. They're specialized and
know what they're doing.

With a software team, even if everyone is full stack,
you're going to get people doing more of what they're
comfortable with. The person who gravitates to backend
will be capable of grabbing the odd UI ticket, but
they're going to be a lot more productive if they're
doing backend work.

You might end up with a slightly more cross-functional
team, but you had to do a whole song and dance to make
it happen, selecting for things that the individuals
likely won't end up needing.
/u/niverser
Left to their own devices developers would have your
computer instant on booting and running on 4mb of ram

Engineers who were trained to optimise for efficiency
of programs, probably.

Developers who learnt coding with the aim of deploying
apps, mostly likely not.
/u/Bobertolinio
It's more nuanced than that. It's not easy to find many
good software developers that know how to write native
programs. But you have a ton that know web development.
So they chose to stop investing in the people to learn
native and brought the web to the desktop apps.
/u/RadzimierzWozniak
I know, and an mail program actually needs a web browser
inside for displaying email.

But i prefered to comment a modified Kaczyński
manifesto than go into detail
/u/Odysseyan
Electron has some apps that do start and perform super
fast though. You can't blame the tech, just like how we
can't blame react native for powering the slow windows
start menu.

VSCode is electron and in the past, it started near
instant.

Really comes down to what you do with it. Since it had
a lot of web tech built in, it's intriguing to go that
route as well, because caching, optimization and offline
accessibility is all work. Work you can circumvent by
just fetching something in start every time.

And when you do that for everything, it's not
surprising it's slow as fuck
/u/OnceMoreAndAgain
Electron bundles Chromium into the executable, which is
insane. The executable for VS Code is currently 213mb
lol.

I think I can blame for the tech there. There are
better solutions than this, such as what Tauri does,
which is to have operating systems bake in a web
renderer like WebView2 so that applications can use that
native renderer instead of baking in a web renderer into
the executable. What we need is for operating systems to
coordinate on making those native renderers have
identical feature sets. It's already not far off from
that being the case.
/u/Uphoria
I try so hard to get users to use teams and outlook
through their browser, because the "native app" for both
is a web wrapper, and not a good one.
/u/timmojo
And yet, ironically, the "native" versions have more
robust options and settings available.
/u/gyp_casino
Really? The desktop versions of Outlook and Teams are
much better and snappier than the web versions IMO.
/u/xDragod
There are certain apps that I want to be running
separately so I don't have to search for them in browser
tabs. Outlook and Teams are things I'm using constantly
and I don't want them to have to close anytime I need to
restart my browser. I also want to keep browser
notifications off, so having the dedicated app able to
notify separately is my preference. I just wish they
were native apps.
/u/Thiht
Desktop apps were a thing of the past before Electron
gained in popularity. Virtually nothing was available on
Linux, and companies just stopped developing for OSes.
For its flaws Electron actually made desktop apps come
back. Some Electron apps are actually pretty great, and
to be honest trash apps have always existed even with
native apps (whatever native means for Windows and
Linux). Electron is not to blame, Microsoft is in this
case, I have no idea how companies hiring thousands of
highly paid developers manage to produce this kind of
trash.
/u/Seienchin88
It's still crazy to me how modern excel takes a couple
of seconds to apply formatting to a couple of hundred
fields at once, excel online lacking still a lot of
functionality and runs like crap all while my PC also
runs billions of polygons with ray traced light and
shadows...

And excel isn't even the worst offender.

But working at a company like Microsoft (who sadly
imported dozens of MS executives two years ago) - it is
impossible to get funding for something as trivial as
performance improvements or good engineered native
apps... it's all about some new features that might or
might not create new users and if AI is in the name all
the better...
/u/GerryAdamsSFOfficial
Is this a Unabomber reference?
/u/dbr3000
I genuinely can't fathom that Microsoft leadership
doesn't find anything wrong with the shit they're
releasing lately. Surely they use Windows and Outlook
internally? They can't possibly not feel the pain of
what they're unleashing upon us themselves, unless
they're using Macs. Which I can't imagine either. Are
people internally so afraid to speak out that everyone
just pretends everything is fine?

Regular people regularly complain about Windows
nowadays and it feels like it's getting worse every
month.
/u/Illustrious-Watch-74
They truly don't give a fuck. Their revenue comes
primarily from enterprise contracts & their OS is so
engrained that they the user experience isn't a
consideration for Microsoft or the corporate buyers.
/u/gheeboy
Yep yep. Please always remember that: Microsoft sells to
management, not you.
/u/NateNate60
I worked IT at a Fortune 500 company until I was laid
off in December and I can confirm that Outlook was by
far the most complained-about and least reliable
software we used. Stuff would just randomly stop working
and often the only troubleshooting we could do was to
make a new profile or re-install it, which took nearly
twenty minutes.
/u/ShiKage
I've watched a lot of their developer conferences.
Though some give their demos on Windows machines, I've
noticed a good portion of them are using Macs. lol
/u/Fedoraus
I don't know what the standard is anymore since I
graduated right before the AI wave hit but when I was
doing my CS degree, everything was taught exclusively on
linux. Macs using the same command line language (bash)
meant that macbooks were pretty popular regardless of
what you were developing for.

They are just far more developer and open source
friendly environments. But I still prefer windows for my
actual personal use.
/u/Named_after_color
Honestly I was using windows all the way through college
and then got my first coding job and they gave me a Mac.


They're just better to use for development. I only use
windows to game now.
/u/j0y0
Well duh, can you imagine not being able to do your
presentation to clients who do millions of dollars worth
of business with you because windows insisted on
updating right the fuck now even though you specifically
changed the settings to not do that?
/u/AdmiralAubrey
The Mac Outlook client is arguably even more terrible.
Interface glitches that have persisted for well over a
year, inconsistent hotkeys vs other Outlook clients, and
a lack of feature parity. Which is all, really, just
underscoring your point.
/u/IkLms
Leadership at a lot of companies basically don't use
computers. They have lower level employees create
presentations that get moved into other presentations
and it goes up to leadership through that tree. They'll
view some stuff on a phone and largely that's it.

The CEO at my company basically tells us he doesn't
really read his email so if you actually need a response
you should call him.