Usually I test everything on my laptop before I install it on my main station - but this time the issue was so hidden, I did not notice it first - most often I just launch Cubase/Nuendo and then just load an old project. In addition, if I do something in the channel window, I always close everything before going elsewhere because of that limited screen estate. So that stutter effect occuring is less probable on a laptop.
This is different on my main computer with a 50" screen with multiple windows open.
Funny thing btw, the stutter is a lot “smoother” on M4 (and probably even less noticeable on M5) because how insanely fast these CPU’s are lol
Lesson learned…again? 