Sumo physics

My sumo physics aren’t working. I activate them, then all the objects looks like “ghosts” objects.
Can anybody help me?
The bullet isn’t working well, too. It’s the old problem of the collision error with a high friction.

Sumo is deprecated in the newest Blender version.

About your friction problem, have you tried setting it to values like 0.05.

Thank you. It has worked.
(Not the sumo)

What version of blender are you using?