Hey there @GreenHowitzer! Welcome back to the community!
LogOutputDevice: Error: Compacted acceleration structure size is expected to be non-zero. This error suggests that GPU readback synchronization is broken.
being the primary error makes me think that either this is an environmental issue with the GPU settings/drivers (I know you mentioned they are up to date but a clean install doesn’t ever hurt), or if this GPU has trouble with compaction as I’ve seen the 6600XT have a handful of reports on Hardware Raytracing crashing in odd ways.
Try using the command r.RayTracing.Compaction 0 which will reduce performance, but may avoid the crash.