Bugs with Animation of tank. Blender 2.83 stl Well, I'm trying to do a tank like in this tutorial :https://youtu.be/q5fjslhomsI
1.There are often bugs with metric system. It just doesn't work properly that good!

C'mon I have to make stiffness and damping more then 10000 to make them work nice...
2.There is a bug with Timeline.
I use McGavish's .blend file to make every thing right. But tank's body always goes back in it's first position when i press &quot;pause&quot;.

3.Also Emptyies don't go with body cause of lags or bugs. There are 2 examples:

4.When I use Metric system, I need to increase &quot;Steps per second&quot; to 1000 and &quot;Solver iterations&quot; to 400. Or tracks will run away or go through the wheel...
I am very tired and have been trying to make animation for 7 days. Each day like 12 hours. )-;
So after 8th day of researching .. i found really interesting Bug...
It was made in Blender 2.9.1
https://youtu.be/vxjTQ7TOz1E Bug with constraints and parent objects