Here Are Apple's Release Notes for macOS Tahoe 26.1

[JoeSilver]

It might be an idea to check what Electron apps you're running, as per this: https://daringfireball.net/linked/2025/10/20/electron-apps-slow-down-tahoe

There's also a page which tracks applications with an old version of Electron

Shamelectron - Electron Apps macOS Tahoe GPU Performance Tracker

Track which Electron apps have fixed the major GPU performance issue on macOS Tahoe. Real-time status monitoring of Electron app compatibility with macOS 26.

avarayr.github.io

Although for example Discord is considered fixed in that website, while the script that you posted says that it is still affected.
Anyway, I don't really use Discord so I'm getting rid of it.

 

[Sputman99]

Still no option for non-glass flat UI

 

[merlindru]

@germanbeer007

try to run this in Terminal:

launchctl setenv CHROME_HEADLESS 1

then close ALL your apps (do not restart your mac; setting environment variables like this doesn't survive restarts).

now reopen them and test for a while. is the sluggishness gone?

 

[daabido]

Liquid glass to tainted glass. Otherwise known as broken glass.

Hackney Diamonds perhaps?

 

[SparklyApple]

This thread is about Tahoe - macOS 26, not iOS.

Oops. Clicked on the wrong article to reply to.

 

[whatnot]

I need confirmation that the idiotic caps lock and language input popups still pollute the screen, so I can focus on hating Sequoia.

 

[randyoo]

@germanbeer007
You're not running one of the Electron apps known to trigger GPU performance issues on Tahoe, are you?

 

[germanbeer007]

It runs like a charm on my wife's M1 and nay M3 MBP. Curious what model are you running it on?

14" MBP M1MAX 64GB

 

[germanbeer007]

It might be an idea to check what Electron apps you're running, as per this: https://daringfireball.net/linked/2025/10/20/electron-apps-slow-down-tahoe

I've force closed all apps and it's still sluggish until I reboot.

 

[germanbeer007]

@germanbeer007

try to run this in Terminal:

launchctl setenv CHROME_HEADLESS 1

then close ALL your apps (do not restart your mac; setting environment variables like this doesn't survive restarts).

now reopen them and test for a while. is the sluggishness gone?

I've came across that reddit thread where it suggested this. Sluggishness is still there.

 

[germanbeer007]

@germanbeer007
You're not running one of the Electron apps known to trigger GPU performance issues on Tahoe, are you?

interesting site but I've closed all known electron apps. still problematic until I reboot.

 

[DogHouseDub]

No to both. I'm gradually getting used to the Music app's player controls being at the bottom of the screen, but I'm not sure about the track play progress bar being reduced to a very thin line, expanding to normal visible thickness only when you move the pointer directly over this very thin line, which also pointlessly blurs out the names of the artist, album, and track, as well as the miniature album art graphic. There's plenty of extra white space below the player controls cartouche for increasing the height of this cartouche so that the progress bar's full thickness can always be displayed within it, and not require the user to fussily move the pointer over the very thin bar to expand it.

FWIW, I switched over to Cider for now. Allows access to Apple Music and has more intuitive controls, especially for those with an additional DAC.

 

[richinaus]

Are the music player's controls back where they belong —top and center —with an always-visible volume slider?

this annoys me every time I use music, plus the fact I cant read it half the time as all the different graphics of the music sleeves causes all sorts of legibility problems. Beyond stupid.
However not quite as much as the screen grab on the phone switching the accept button with the cancel button......

 

[zenmacx]

It might be an idea to check what Electron apps you're running, as per this: https://daringfireball.net/linked/2025/10/20/electron-apps-slow-down-tahoe

Thank You for this information, somehow I missed it. Turns out this was very beneficial.