As you can see there’s light where it shouldn’t be under my car wheels.
Console commands that have proven useful or impactful in some ways are:
r.Lumen.ScreenProbeGather.ShortRangeAO.HardwareRayTracing 1
r.Lumen.ScreenProbeGather.DownsampleFactor 8 (below 8 kills performance too much)
r.Lumen.DiffuseIndirect.SSAO 1
r.Lumen.ScreenProbeGather.ShortRangeAO 1
PostProcess has Lumen GI and Lumen Reflections.
A strong directional light directly on it also helps, but doesn’t fix completely, and is not appropriate to the scene I’m building 
If you have any ideas to try… 
Thank you