Pisaacson26
I don't know if you still watch this thread, I have the same problem, but I'm using an MSI Duke 1080OC. It only freezes when I am getting out of the browser, Mozilla, or watching a video in Youtube; never happens in a game. I was worried that it might be CPU bottleneck from memory since I'm using an i7 3820, I am also using windows 7 64-bit. Just glad it's not the card these things are way to pricey right now to replace.

Well it still happens here but a lot less, in games it never happens but just as you said Mozilla Waterfox/Firefox and YT only I have it with Facebook as well, so it could be a conflict with Waterfox & Win7 maybe, but it's not as frequent anymore I kind of accepted it tbh. in games my GPU doesn't surpass the 62C max temp which is nice for silent mode :)
rock solid performance in my games or watching BluRay films, nothing is perfect thus I kind of accepted the issue and just learned to deal with it.
 
NVIDIA gave me no helpful response so as that goes, dunno what else to expect.

I just went ahead and got an OEM Windows 10 code for about $30 dollars and upgraded, no problems since, having the cash to black was getting really annoying when doing work so I just bit the bullet. I also saw an increase in performance in some of my games as well, I don't know if it was just a fluke or if the cards run better on the newer OS. But hopefully Nvidia fixes the problem, but I don't have much faith in their driver updates anymore to be honest.