Colliders not Colliding when FPS are to low

Hi!!, I am developing a Tennis VR… and my graphic card died… so I have to work with an old one that
with difficulty supports it.

So I have a very weird problem… When I move quick the racket it does not trigguer OnCollisionEnter… I have to do the movement slowly

That is what is happening to me…

I try all the combinations Collision detection - Continuous or Continuos Dynamic.. etcetc.. I also try the alrgorithm "Dont go through things"

So…

It is posible that is not working because of the low FPS? Right know I cannot test in other computer…
I do not know what I am doing wrong…

Thanks in advance!

I am using Continuos Dynamic.
Yes the rigidbody is bigger than the racket x,y,z and I also decrease the fixed time step.

The racket rigidbody is attached to the GameObject. So I have to create an script to do it? To move the the rigidbody at Update() function or FixedUpdate()?