We have high speed machining. I’ve tried G187 P1 through P3 (its been a while so memory hazy). I ended up keeping it on the medium setting I think. Havent looked at it since the first experiments. I can look Monday. I was having the same problem on our new at the time VM-3 as our 5 year old VF-2ss. So I concluded it was just the nature of the beast but I sure hope there’s a better answer than mine.