I paid for the OC'ed version $469.99, and the texture glitches and crashes haven't happened since I installed the latest drivers. The card seems to be doing well on thermals, as it never exceeds 62 Celcius under load. But it confuses me on how the performance just drops. Should I install the old drivers again?
t might be that your card is dying, or isn't able to boost to the same speeds as before. New drivers might fix this by not allowing the same as high boost clock speeds which would be the <6% difference in scores.
I've bolded the important part of what I wrote. Again, check the clock speeds. Are you hitting what you should be hitting? It's very possible there is a new driver out that is preventing you from hitting the boost clock speeds you should be getting to maintain the better temps and prevent crashing/bad textures. If this is happening you aren't getting what you paid extra for. But until you measure we are only guessing.
Edit: Rolling back the driver might get you boosting back to where you were, but it could bring back crashes and bad textures. You'll have to measure the clock speeds with the different drivers in place. If you are lucky it was a bad driver loaded and everything is fine with a reinstall. If you are unlucky what I said earlier is the case and you need to return your card.