disable the cpu hog that is CursorUIViewService with sudo defaults write /Library/Preferences/FeatureFlags/Domain/UIKit.plist redesigned_text_cursor -dict-add Enabled -bool NO and restart. This service is the world's most over engineered capslock indicator, and if you toggle caps lock a lot, it loses its mind. Unfortunately for me, I rest my left pinky finger on the caps lock key and toggle it nervously when I'm thinking. Do NOT kill the running process, doing so can freeze the UI forcing a power-cycle.

(reposted from thread #759802 to match your repost of the question) You can disable the cpu hog that is CursorUIViewService with sudo defaults write /Library/Preferences/FeatureFlags/Domain/UIKit.plist redesigned_text_cursor -dict-add Enabled -bool NO and restart. This service is the world's most over engineered capslock indicator, and if you toggle caps lock a lot, it loses its mind. Unfortunately for me, I rest my left pinky finger on the caps lock key and toggle it nervously when I'm thinking. Do NOT kill the running process, doing so can freeze the UI forcing a power-cycle.