The Virtual dimension/field does only quantum waves/field excitations (quantum weirdness events). It isn't using spacetime, but can influence the bending of it via its mass. A particle/wave in duality mode will have a physical state, so it is using the virtual dimension and spacetime (Einstein's field equations). Matter too large to be influenced by the virtual dimension are governed by Einstein's field equations.

Dark Matter doesn't have a duality mode so it is stuck in the Virtual dimension/field.