abril 2026

CursorUIViewService is not responding and eats RAM

CursorUIViewService is a macOS system process responsible for rendering the input cursor and the keyboard layout switch indicator. A memory leak issue first appeared in macOS Sonoma and continues to occur in Sequoia.

Some report the killing of the process leads to MacOS crash, some don't. In my case the issue was quite quick transition to "not responding" state and gradual increase of RAM consumption from 8 Mbytes which is okay for such process up to 4.6 Gbytes which is just silly.

This only has a temporary effect and the state gets back to a not very desired one quite soon. Based from what I've read, some experiencing even MacOS lags due to this behaviour.

Ultimately, I've decided to disable the process, and I have no regrets.

Disable the pisoshet.

sudo defaults write /Library/Preferences/FeatureFlags/Domain/UIKit.plist redesigned_text_cursor -dict-add Enabled -bool NO

There is another way teh internet says:

sudo launchctl disable gui/501/com.apple.CursorUIViewService
sudo launchctl bootout gui/501/com.apple.CursorUIViewService

501 above is the standard user ID of the first MacOS user, which can be checked via id -u.

Then reboot and that's it.