macOS Tahoe Performance Regressions and Typing Delays

I'm using a late 2021 16" M1 Max MacBook Pro with a 10-core CPU, 32-core GPU, 64GB RAM and 2TB storage. I updated to macOS Tahoe about three days ago now and have been experiencing a plethora of issues, mainly with the Liquid Glass overhaul that has caused a significant performance regression in everyday navigation throughout MacOS' UI. It should be noted I am not using VPNs and any peripherals.


I'll copy the bug report I sent to Apple, but this first part regards the typing delay and auto-completion list pop-up when using Scrivener or any app that utilizes TextKit from Apple.


There is a noticeable 1-1.5s second delay when the text suggestions or completion popup appears in text fields across macOS 26 (Tahoe), including in Apple’s own TextEdit and third-party apps such as Scrivener.


After testing, the issue is directly linked to the “Reduce Motion” accessibility setting in System Settings → Accessibility → Display.

When “Reduce Motion” is enabled, characters and pop up appear with a long lag or freeze before they animate in.

When “Reduce Motion” is disabled, the delay disappears and the popup and characters appear instantly.


This did not occur in macOS 25 (Sequoia). The issue appears to have been introduced with the new Liquid Glass UI animation system in macOS 26.


Steps to Reproduce:


Enable “Reduce Motion” in System Settings → Accessibility → Display.


Open TextEdit (or Scrivener).


Start typing several words that triggers the text suggestion/completion popup. This happens on scriptwriting mode or anything that uses the auto-complete function, showing a list of possible suggestions.


Observe a delay (~1–1.5s) before the respective characters pressed on the keyboard appear on screen.


Disable “Reduce Motion” and repeat — the popup appears instantly.


Expected Result:

Popups should appear promptly regardless of motion settings, matching behavior on macOS 25 (Sequoia).


Actual Result:

When “Reduce Motion” is enabled, popups animate with a visible delay/freeze, interrupting typing flow.


Notes:


Occurs on multiple Macs (Intel and Apple Silicon).


Reproduces in both Apple’s TextEdit and Scrivener (which use NSTextView).


Related to recent animation system changes in macOS 26 (Liquid Glass overhaul).


The issue was discussed with the lead developer of Scrivener, who mentioned this issue is an Apple bug NOT a Scrivener/third-party bug that needs to be fixed from their end as it happens on several Macs operating on Tahoe that have reduce motion turned off.


Animations feel choppier, especially when swiping up with three fingers to view all apps (or pressing F3 on my MacBook Pro), but also when using Stage Manager, performance takes a massive hit -- the animation for activating Stage Manager, switching between apps and viewing all apps in Stage Manager feels choppier and sluggish when compared to Sequoia, where everything was buttery smooth. My MacBook heats up (which has never happened) when using Stage Manager, and when it's turned on, navigating apps feels slower and not as snappy.


Resizing windows and apps on MacOS (both Apple native apps and third-party software such as Word, Powerpoint, Adobe, etc.) feels like I'm using a 10 year old machine. The animations and transitions lack the fluidity to match the 120hz ProMotion display of my MacBook, dropping below 60hz sometimes which is incredibly jarring and distracting. Scrolling through apps, especially in Apple Music, feels jittery and choppy when compared to apps like News, where everything is incredibly smooth.


Is there anything I can do to fix these prevalent issues?

MacBook Pro 16″, macOS 26.0

Posted on Oct 30, 2025 10:10 AM

Reply
11 replies

Nov 1, 2025 4:17 PM in response to neuroanatomist

Rolled back to Sequoia on the same MacBook and experienced no issues there. Thankfully, I've recorded how stage manager, typing, scrolling and UI animations/navigation plays out in Sequoia (using the same versions of those apps that I was using on 26.0.1) so that I can compare to Tahoe. So I reinstalled Tahoe (again, this is getting exhausting) and the issues began again.


This all points to poor software optimization on Apple's behalf and not necessarily something that's hardware-related. I talked to Apple Support and they told me I shouldn't have to upgrade for another four years as an M1 Max should last me about eight years total. Plus, for the grace of upgrading to M4 Max, I can get similar, if not better performance and compatibility on a prebuilt Windows PC with better specs for around the same price.


I had some other people at the stores check how my MacBook ran and their conclusions corroborated what I mention about responsiveness being sluggish when using stage manager, scrolling in Apple Music, etc.


It's really unfortunate since Tahoe has some amazing features that I can really use, but this is the worst performance I've seen in my lifetime from an Apple product. There's no way I'm spending $7,000 just to use my MacBook comfortably.

Oct 30, 2025 10:36 AM in response to Burger_Boy

Not seeing this, Reduce Motion makes the expected differences but nothing runs more slowly. Exposé isn't choppy for me, instead of all the app windows sliding apart with Reduce Motion there's a fade-out-and-in effect but it's just as fast. Predictive text/replacements are the same speed, e.g. in TextEdit or here in this Safari post box the default "omw" shows the "On my way!" bubble immediately regardless of the Reduce Motion setting. Edit menu > Complete popup in TextEdit is also the same immediate response regardless of the Reduce Motion setting.


Running 26.0.1 on a 16" M4 Pro MBP (14-CPU/20-GPU, 48 GB memory, 2 TB storage).


See if the problem is present when you boot in safe mode, which disables 3rd party extensions and performs some system cleanup.

 

Start up your Mac in safe mode - Apple Support

Oct 30, 2025 10:29 AM in response to leroydouglas

Hey!

Thanks for the info. The issue's already been discussed with the development team at Scrivener, who concluded it's an Apple regression introduced in Tahoe. Here's the link for that, which delves into more detail:

https://forum.literatureandlatte.com/t/scriptwriting-elements-list-delay-on-macos-26-tahoe/150779

As for the latter part, I don't believe it to be an accessibility issue as much as it is an optimization issue. Most of these features I used in Sequoia without a hitch, yet in Tahoe they seem to be struggling (which shouldn't be happening on a machine that cost around $6,000, especially in everyday navigation).

Oct 30, 2025 10:56 AM in response to Burger_Boy

Burger_Boy wrote:

The fact that when turning off reduce motion all the issues play out leads me to believe the issue fundamentally lies in Apple's animations introduced in Tahoe, which don't match the 120hz as closely as they used to in Sequoia.


To be proactive you can file a bug report / submit your Apple Feedback here:  Product Feedback - Apple



The current stable release of Tahoe  including bug fixes,  security updates  is macOS 26.0.1

Keep your Mac up to date - Apple Support

Keep your Mac up to date - Apple Support



Oct 30, 2025 12:00 PM in response to Burger_Boy

Scrolling in the Music app is smooth as silk, down long playlists, etc.


From your link, the developer states, "This is a bit annoying as it means you have to pause for a fifth of a second now before you can choose a completion." But you stated above, "Observe a delay (~1–1.5s)..." if you're not exaggerating the timing then that also points to a machine-specific issue.


It is possible there are processes running in the background that are using significant resources. Check Activity Monitor, CPU tab, sort by % CPU to see what's running hard.

 

Activity Monitor User Guide for Mac - Apple Support

Oct 30, 2025 10:21 AM in response to Burger_Boy

Burger_Boy wrote:

I'm using a late 2021 16" M1 Max MacBook Pro with a 10-core CPU, 32-core GPU, 64GB RAM and 2TB storage. I updated to macOS Tahoe about three days ago now and have been experiencing a plethora of issues, mainly with the Liquid Glass overhaul that has caused a significant performance regression in everyday navigation throughout MacOS' UI. It should be noted I am not using VPNs and any peripherals.

I'll copy the bug report I sent to Apple, but this first part regards the typing delay and auto-completion list pop-up when using Scrivener or any app that utilizes TextKit from Apple.

There is a noticeable 1-1.5s second delay when the text suggestions or completion popup appears in text fields across macOS 26 (Tahoe), including in Apple’s own TextEdit and third-party apps such as Scrivener.

After testing, the issue is directly linked to the “Reduce Motion” accessibility setting



re: Scrivener


For your third party app—if in doubt search the developers website or contact their: Support/Help/FAQ/Known issues/compatibility/updates… I would start there.


https://www.literatureandlatte.com/learn-and-support


https://apps.apple.com/us/app/scrivener-3/id1310686187?mt=12


https://forum.literatureandlatte.com/t/how-long-until-scrivener-is-updated-for-macos-26-tahoe/150495



for Accessibility issues—

you can email the Accessibility team at Accessibility@apple.com and they can respond via email.


How to contact Apple for accessibility support

https://support.applreturnse.com/en-us/HT209585

Oct 30, 2025 10:37 AM in response to neuroanatomist

I've tried booting in Safe Mode and even tried creating a separate clean user account to test the issues, which were still present there. I ran First Aid on my MacBook and it said it was fine.


The issue isn't with Reduce Motion turned on, it's when it's turned off (which is by default), in which all animations appear and play out.


Additionally, the predictive text replacement in Safari looks different than the one in Scrivener since here it's a bubble. I'm speaking out of ignorance here, but it appears different. I can attach a video that demonstrates the issue in motion in Scrivener. The fact that when turning off reduce motion all the issues play out leads me to believe the issue fundamentally lies in Apple's animations introduced in Tahoe, which don't match the 120hz as closely as they used to in Sequoia.

Oct 30, 2025 10:56 AM in response to Burger_Boy

Missed that it was with Reduce Motion off (default) but I still see no difference in predictive text with that setting toggled (this was the first time I've ever turned it on, and it's back off now). Same with Exposé and other system animations (like app opening from the Dock), no lags or choppiness regardless of the setting, the result is smooth and immediate. Doesn't matter if I'm in clamshell mode with an external 5K:2K display running at 60 Hz or the internal 16" ProMotion display on the MBP.


I suspect there's a machine-specific issue or the issue with Scrivener itself (a developer blaming an OS update for an issue is a common practice even when the app is at fault).

Oct 30, 2025 11:48 AM in response to neuroanatomist

It might be because I'm using an M1 Max, but still the animations feel choppy when I have about 12 apps open (which didn't happen on Sequoia). I'll re-direct you to the link I sent Leroydouglas (a bug report has already been filed and reported to the engineers, but I'm wondering what I can do in the meantime).

https://forum.literatureandlatte.com/t/scriptwriting-elements-list-delay-on-macos-26-tahoe/150779


If you scroll down to the section from September 30th, you'll see the issue isn't with Scrivener itself as they did internal testing and found the issue arises with a new animation mechanic that appears when prompting the auto-complete list that they don't have control to remove (this would be an Apple-side thing). I used the same version of the app (Scrivener 3.5) on Sequoia 15.7, but upon upgrading to Tahoe 26, that's when the issue began. The only variable that has changed is upgrading to Tahoe, which has caused all of the issues.


Can you try testing out scrolling in Apple Music? I just want to make sure all variables point to a machine-specific issue (despite sending system diagnostics saying everything is working perfectly fine, which is confirmed by the First Aid I ran on my MacBook). The scrolling should be buttery smooth and have no jittery choppiness.


It's disappointing that this machine only lasted about 3 years (I bought it from Apple back in '22) because of a poorly optimized software update that doesn't account for a lower denominator (despite the M1 Max being a beast and not a low denominator). I've sent it to a Certified Apple Repair Center, paid around $160 dollars to check it (since AppleCare expired; even if it didn't, it doesn't cover software) and they said everything's in perfectly good condition, both on the hardware side and software side.

Oct 30, 2025 12:22 PM in response to neuroanatomist

Okay it might be machine specific. I think it's time for an upgrade.

I do 8k video editing (Premiere Pro, Final Cut), 3D animation/VFX with Blender, Houdini, Nuke and Maya with some gaming at 4k, but as mentioned above, lots of writing as well as graphic design and 4k photo editing.

Which combination of specs for the M4 chip (either M4 Pro or M4 Max) would excel in these fields?

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macOS Tahoe Performance Regressions and Typing Delays

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