For some reason, the location of trees (the wind is applied to them) in different render types (Lit and Path Tracing) is different, which is why the ID map and all other post processes are curves (they coincide with Lit but not with Path Tracing).
Rendering in exr format with"multilayer" enabled…
I read somewhere that it might help:
r.RayTracing.Geometry.InstancedStaticMeshes.EvaluateWPO 1
but that didn’t quite help. There was movement, but even so, the trees in different renderers move differently. Is there anything I can do about it?
Here is the test frame and render settings…