Annoying Problem with inability to have perfectly still sphere on table..

hello ive been having this issue for a while, its very annoying..

for some reason i cannot have a sphere on slate without it moving slightly.. even though autosimulation is on i still want it to be perfectly still if no force is applied or velocity and angluar velocity is 0.

does anyone know why this might be?

the sphere is a sphere collider, and slate s a box collider.. both are supposedly perfect surfaces..

the z is somehow allways slightly moving and the z rotation is going between 0 and 0.001 very quickly

this is happening on all the spherical objects..