Will know give DX12 as it seems to be a working workaround for LightYarn. How to switch he has described here: Editor keeps crashing constantly page-2#post-9084829
EDIT: Unfortunately didn’t solved it for me. Also tried Opengl3 and Vulkan. Still getting that error -.-. This is really disappointing and this is not a minor thing because once Unity dies to it it takes the GPU with it! So I now have installed UE und Godot. If this issue isn’t getting resolved fast (or we at least get tools at hand to figure out whats wrong with our projects) then I unfortunately have to switch engine.