Thanks for this info. I was wondering this myself, since 4.27.2 has far superior handling of physics assets simulated using Rigid Body Animation Nodes. The simulation is perfect at any framerate (tested from 30 fps to 240 fps), however in Unreal 5.3.2 and 5.5.4, anything above 60 fps becomes increasingly stiff and essentially breaks the desired floppy bone chain effect. What I don’t understand is why are all the Chaos plugins enabled by default in 4.27.2 (launcher version), if the Engine is actually still using PhysX?