Lagging when panning, zooming etc. SOLVED fyi

I had a terrible lag when panning, zooming etc. in Illustrator. This only occured when holding down key shortcuts involving the space button. Panning/zooming using the tools was perfect.

The cause turned out to be 'Display Pilot 2' for BenQ monitors. Quitting it and all is smooth.

System: Mac mini M4 Pro

Illustrator version: 29.1