Hi Benjamin,
Thank you for the repro - that helps a lot. I’ve had both Jittery cases and settled cases in the example… but even stationary and what looks to be settled it isn’t sleeping. As a quick helper - we have an awesome tool called Chaos Visual Debugger which you can use to check most physics things. Chaos Visual Debugger - User Guide for UE 5.4 | Tutorial
I’m going to check what is happening at the core level and see why the kinematic side isn’t converging
Geoff