Several times a day, seemingly at random and for no discernable reason, the map zones in The War Within on my World Lap pixelate into 8 bit or worse, lag for a while, then normalise with a huge, blinding blue glow.
Absolutely nothing fixes this outside of completely restarting the game and it happens even without my addons of which I only run a few and all are up to date.
I have tried repairing my WoW files several times, there is no fix.