Grey Screen Issue

My screen becomes grey for a brief second then returns to normal shortly after starting to play Diablo 3 ingame.

This started happenig about 2 weeks or so ago.

I checked my log and this is the error that my system reports:

svchost (3324,R,98) TILEREPOSITORYS-1-5-18: Error -1023 (0xfffffc01) occurred while opening logfile C:\WINDOWS\system32\config\systemprofile\AppData\Local\TileDataLayer\Database\EDB.log.

How can I solve this?