Hmmmm, that sucks! I must say I’m not experiencing this. I did do kernel upgrade, and a bunch of other things (intel drivers, enable chip microcode etc.) but I have found it to be incredibly snappy now. None of the delays mentioned, and also screen tearing has stopped now. When I initially installed I had some screen tearing, particularly in Chrome scrolling, but that has now resolved.
Anyway, I’m glad you found a way to deal with the issue!