Gravity isn't yet part of the quantum scenario, as far as I'm aware.
Considering gravity in GR is not a force but is a warping of spacetime, could it be possible for the warping at quantum levels to be so small that it becomes "negligable" ? I.e. at quantum levels, spacetime is never warped, but is always flat.
An inverse and rather crude analogy might be scaling up of rough surfaces - for example, a billiard ball is smooth to our touch but put under a microscope is rather rough. I'm thinking along the apposite line for spacetime; rough (warped) by large scales, but flat at the quantum scale.