SU crashes with measurements

I’m preparing parts of a simple furniture model for cnc milling. I move the parts (all solids) to the ground plane and add measurements to manually copy these to my old cnc (which doesn’t read dxf of dwg). When I move these parts, I get a LOT of crashes. It doesn’t crash when modelling, or when adding the measurements, only when moving, rotating, drawing lines etc. The solids are all simple pushpulled parts.