Pretty much, yes, its a plasma PITA
With CV on i get a bit of a radius on the top of the cut, (the bottom is always rounded due the the flame lag) and with CV off the tops are much improved but there is this jerk when going from straight to curve every time, not much, just a judder in motion.
I'm just tuning up my new table so looking at ways to get the best, I have tried pushing acceleration into the shudder zone but the stop-CV is still the best for a sharp corner. Acceleration is currently around 0.3G and speeds are around 4000-5000mm/min on my test parts.
As i say, I'm just looking for improvements really, Mach is doing what it does best as usual