Sure, how else could I have given feedback from the projects issues? I’m not here to pick a fight or rain on your parades. Just pointing out what causes issues with this kind of setup.
OP has explained that fake wheels are there to fix the motion blur issue and nothing I said on previous post says otherwise. I did check his project and he does use physics simulation on fake wheels even when he overrides their angular velocity from BPs. They have mass and they are attached to the real wheels so they take part on the actual simulation (they add mass to the suspension and additional constraint to solve) - which isn’t right way to do it. Do note that I told more proper way of doing it too.
You kinda missed my point. Add Force itself handles the deltatime variation (although it’s not perfect but that would be a topic on it’s own), real issue is that if you do quick changes to the physics on each frame. You can only react to the changes only when Tick occurs. A good example of this is if you handle for example suspension on Tick: If game runs 15 fps, you can get new data only 15 times per second vs 100fps you get data in 100 times in a second. With 15fps, if suspension then is fully compressed, you apply full counterforce for the timestep of 66 ms. If the same thing happened at 100fps, timestep would be 10ms and you’d get a new data for the suspensions new position after that 10ms. With 15fps route, you have to wait 66ms just to realize that the suspension you tuned to work properly at 100fps now launched the whole car into space. Similar inaccuracies happen on anything you change on tick that alter the physics simulation, although the effects may not be as serious as on my example.
I think we all can agree that default physx vehicle isn’t very good. Constraint based vehicle on the other hand is a lot worse on certain aspects so it’s not fair to say it’s 100x more stable (as it isn’t). I’ve explained the reasons on my previous post but of course, you don’t have to believe what I’ve written there, it’s just my educated opinion on these matters. For all others, be at least aware of the mentioned issues if you pursue this route.