13-02-2026, 02:15 PM
(12-02-2026, 05:12 PM)josemendez Wrote: Hi,
Yes, this is to be expected. +60000 shape matching constraints is *a lot* of work, and will be very intensive for the GPU since each individual cluster is mostly serial: each constraint has to iterate over all particles in the cluster, even if all constraints can be simulated in parallel.
Also keep in mind that the scene has self-collisions enabled, which for 60k particles will generate tends of thousands of contacts, further degrading performance.
Note that GPU utilization in the profiler seems to only take draw calls into account, not compute dispatch() calls.
I tried a similar setup (with particle collisions disabled, only shape-matching constraints) in a RTX4090 and I get around 150 fps, but it's a comparatively more powerful GPU.
kind regards,
Thanks a lot for clarification! Your product support is better than some enterprises have!