I been having problems with my AwesomeTech GRBL board skipping steps when system running for about an hour. I replaced the A4988 that was getting hot but is still not the correct steps?(not shure).
The real problem now I delete the K40 profile recreated the profile and now my laser will only run a vary low speed( includes framming) Hommeing is normal speed.
I found the move speed is 1000 and if I increase to 5000 speed it works nornal. What has changed?
One thing I noticed on my Atomstack X7 is that in the machine profile screen there is a tab that by default is not visible, you have to open it and you get a warning not to change manufacturers settings (or something like that). Mine showed a default speed of 6000 I think. But my machine can do 11,000 so I changed that one. Maybe your profile is defaulting your maximum speed below what your machine is capable of.