Thanks! It worked, steps as below: 1/ disabled Siri related settings 2/ replace setting cd ~/Library/Developer/CoreSimulator/Devices find . -name com.apple.suggestions.plist -exec plutil -replace SuggestionsAppLibraryEnabled -bool NO {} ";" 3/ kill Spotlight Process in Activity Monitor 4/ restart simulator -> not all cores on my M1 are used now! temperature drops from 6x to 4x! I thought Xcode is optimised but i guess we'll have to monitor any release from A. Team then! :)

Confirmed 29 Jan 2021! Mac M1: BigSur 11.1 Secondary Click with 2 fingers: Not Working