I see where you are coming from but I designed and built this table myself ;)

Its driven by tw medium size Nema23 motors for X & Y plus a small Nema23 motor on the Z axis, it has a floating head etc.

I think the main issue is poor loop response time of the Proma THC unit, its fine on slower cuts but get up to 2300mm/min and higher and it cant cope.

Cant find a different unit that will work with my little Hypertherm 30xp though, they all want built in outputs for the THC and I don't have that.