Hello, guys. I've recently upgraded my project to Unity Physics package 0.50. after i converted, I've got huge performance drop (From 60 FPS to 20 FPS) and I found that inside FixedStepSimulationSystemGroup All system run multiple time in 1 frame moveover Even I deleted physics step GO which is converted to entity from scene, the unity physics is working. My entities related to physics are about 500s. Why is it happeing? Can you explain some reason that make BuildPhysicsWorldSystem work 5 times a frame?