@twiggi
I once had a similar issue to yours. Whenever the graphics card was under load, I’d get error messages, daz would crash regardless of its version, and sometimes the computer would freeze. Initially, I thought it was a problem with the graphics card, so I disassembled it and reapplied the thermal pads and paste, but the issue persisted. After running several benchmark programs to diagnose the problem, I discovered that the power supply was the culprit. Despite having a sufficient power supply for my rig, it couldn’t properly deliver power to the system for some reason. In my case, completely cleaning it, including removing all the dust accumulated on the capacitors, fixed the issue. You might want to check your power supply as well.