Culling Distance (and volume) seems to be broken still in UE4.25 when using DX12 and raytracing. Made answer ticket to vote: https://answers.unrealengine.com/que…g-in-dx12.html
Cant wait to use DX12 with bigger levels. Currently getting only 20fps with the culling issue. Seem to be bit better than in UE4.24, but my GTX2080ti also crashed.
EDIT: On my bigger level with levels under peristent level, culling only work if object have “Visible in Ray Tracing”-setting disabled. On separe small level, culling works even with that setting enabled. What could affect that? :S