I did RTRT (real-time ray tracing) with dynamic LBVH rebuilding for each frame (online webgpu demo)
you can drag&drop obj files to canvas (set shadow depth to zero if too dark)
P.S.:
Vega7 (5600G iGPU)
LBVH build time :
[264 tris] scene 1 (animation) 2.9 ms
[156 tris] scene 2 (simple) 2.2-2.7 ms
[218,724 tris] scene 3 (chess) 12.5 ms