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Ugh, I installed the new “Tahoe” update to MacOS a few days ago and I instantly noticed that my computer, a Macbook Pro 16″ 2019 ith M2 Intel Silicon, was sluggish and the CPU fan was running more than previously. I especially noticed that scrolling started in Chrome had becoming insane-makingly jittery. I found some tips and THIS one seems to work!

(via)

To disable the problematic feature for all apps thus fixing the issue, run the following command in the Terminal:

defaults write -g NSAutoFillHeuristicControllerEnabled -bool false

And restart all apps/system. Note this also disables macOS’s native autofill feature.

That worked to fix my computer! It’s now back to being zippy-fast and not overheating for no reason.

If you need to remove this fix, run this command in Terminal:

defaults delete -g NSAutoFillHeuristicControllerEnabled

The same post also says this, though I don’t need to run it to fix my problem…

To fix the perf issues for Electron apps (and presumably Chrome/Chromium browsers?), also run:

launchctl setenv CHROME_HEADLESS 1

Note this need to be re-run every time you reboots. Thanks for u/PatrikCR for the heads up!

This tip didn’t help:

If I turn off automatic graphics switching in power it works smooth. Ig intel GPU cant handle macOS 26 :/