Character vibrating when it moves

No if you have collisions on both the mesh and capsule you will get jittering. Set mesh collision to “no collision”. Only set it for the capsule

Just set their channels to exclude one another.
Generally the mesh is to be set to physics.
Use cases do vary.

I did it.
Thank you for all the help, I seriously couldn’t have done this without you.
I remade the character as a pawn instead of a character and this time it worked perfectly.
Thank you for patiently answering all my questions, you are the only reason my game is still alive.