@GeorgeOfAIITrades
We are working on a fix for your case under PhysicsSteppingMethod = Default/Adaptive.
So updating all places won’t be necessary.
(essentially VehicleSeat surface hinge cars will be forced to run at a fixed timestep even if the workspace setting is set to default/adaptive, which solves your issue.)
Yes, us putting the VehicleSeat SurfaceHinge car into “Fixed” means it will always step at 240hz, even if Workspace.PhysicsSteppingMethod = Adaptive, the car itself will still step at 240hz. It will not be able to take advantage of the performance benefits of the lower frequencies.
Eventually the PhysicsSteppingMethod option will be removed, putting all places into “Adaptive” mode. Edge cases like yours will continue to run locked at 240hz.