I have a scene with lots of hair, so normally when rendering on CPU/CUDA, Blender takes 20 seconds or so on “building BVH”. However, when switching to Optix, it appears to completely skip this step and jump to rendering within seconds. What is the reason behind this, and do Optix sacrifice quality for performance?
Another thing, do I need more VRAM to render on Optix than on CUDA? I have noticed that I tend to have more “out of memory” issues on Optix than with CUDA.