Souma tank has some SCREWED UP physics.
It constantly scrapes against the ground. The engine will not allow you to go up even the slightest of hills without gliding back to the bottom unless you go perfectly straight. When turning, it gets stuck on the ground, stops, and takes a long time. Please look into this.
The Char Bis does not appear to have these issues, but it also turns incredibly slowly. I've seen video from French resistance fighters that were attacking German-used S35s, and they did not suffer from these crutches. It turned quite quickly actually (around 2 seconds for 180 degrees)
It has a lot of the bugs that the Canadian artillery piece had in the last one.(sexton?)
Yes, I've noticed this aswell. Its the same problem the Abrams tank in DC has.