I don't get your point. It's just a game engine limitation, where is glitch? It's not possible to calculate so fast movement correctly and you use negative springs values.
Good one, interesting suspension and chain mechanics. Need some improvements thought ... Track chain too stretchy (increase density) and made from circles (yak).
You can steal design from here or develop track by yourself.
Can you tell me what that "hair" on the back of turret for?
Again, again. Can anyone make realistic breakable car or I should do it?
Why it's freaky big and soft? why it cut into strange pieces instead of doors and windows? 7/10 (only for good work with textures)