Running tripple, msaa, shadow split on, NV 1080, win10-64 There is a Halo effect around the wheels/tires caused by disappearing pixels of the contact shadows. It looks like the tire geometry is rendered into depth buffer slightly bigger than the visible wheel geometry. Then when ground shadows are drawn a few of those z pixels block them. There must be a small mismatch in geometry or transformations during zpass that causes a tiny visible gap (2-3 pixels). Only saw the gap on left side of tires.