I’m running 5.1.8 under Rosetta2 on an M1 MBPro and I find it frustrating to the point of being unusable. The UI is laggy - far more than most other Rosetta apps. I’m not going to use Kicad on the M1 any more - pointless - will go back to my old 2013 Intel MBPro as that is much more responsive and usable.