Hello,
I’m encountering a performance issue in my Unity project with ECS and would appreciate your help.
I have a rigged 3D model with 4k vertices, and I’m using a Compute Deformation shader with a single material. When I spawn this prefab as a GameObject in the main scene, I achieve an average FPS of about 110-120.
However, when I spawn it as an entity in a SubScene, I only get around 70 FPS, despite seeing increased CPU main and render thread usage. Even when I move away from the entities (3D models), the number of batches, triangles, and vertices decreases, but the CPU load remains high.
In the profiler, as I understand, that the CPU is waiting for the GPU. Under the GPU tab, I notice that the Default World Unity.Entities.PresentationSystemGroup takes approximately 15 ms, and when expanded further, Default World Unity.Rendering.EntitiesGraphicSystem => EndUpdate takes around 14 ms and It stays pretty much all the time like that.
What could be causing this issue?
Unity 2022.3.35f1
Entities 1.2.3
Entities Graphics 1.2.3
URP 14.0.11