I’m not 100% sure about anything anymore. I scrapped that project and started a new one based on the Strategy game sample and turning off the motionblur on the PostProcessing Volume seems to work correctly. I’m going to try to re-create the issue. The blur was present when panning the camera as well.
I’m not entirely sure what I did wrong, but I can’t recreate this issue. I think I may have had more than one floor model and perhaps that was causing the issue. >_< I’m just going to accept my own answer here and close this issue.