Solved

Racing in a void

Screenshot is my view of Spa yesterday.

https://1drv.ms/i/s!AvD1av5l4fOPk78tbJnie-_nE6hLJA

Wasn't too problematic as i could still work out distance and where DRS zone was.

I did reload the race viewer didn't help

Are you still having this issue?

Try loading the viewer in the lowest possible quality. If the map loads after changing the quality, then change it back to your desired viewer quality to make sure it still works.

I did try lowering it during the race nothing changed. had no issues tonight looks like it only affected me yesterday.