I recently built a new gaming rig with an R9 Fury X and, being used to play Heroes of the Storm on lowest settings with my old GPU, with the new one cranked everything to ultra (1920x1080). Everything goes smooth, I get +100 fps and things look awesome, but I noticed random flickering "white spots" appearing on the ground, like these,
I have noticed bigger clusters (lets say more or less the size of a character?), but it's kinda hard to catch them as they flicker randomly, had to watch a replay of a game where I noticed a lot of them and hunt for the above screenshot, left is the artifact and right is the normal ground texture. In some maps I don't see them at all, others I see them 5-10 times on a 15-20 min game.
I've been monitoring the temps, and the card does not seem to run very hot (~40ºC while playing, ~25ºC idle). The pc is quite new, so I haven't got time to play many games yet, the only other I've been playing is Shadow of Mordor, also everything on ultra and with the HD texture pack, and haven't seen anything weird (and the card runs hotter there too, around ~50ºC). At last, I've downloaded OCCTPT and ran a bunch of 30 min GPU stress tests with everyting set the highest I could and error reporting enabled; the card stabilizes at ~60ºC and no errors are detected.
GPU: Sapphire R9 Fury X, 15.10 beta drivers
CPU: Intel i7 6700K, no OC
Motherboard: Asus Z170 Pro Gaming
RAM: Corsair Vengeance DDR4-2666Mhz, 16GB
PSU: Corsair RM750i (hooked a single cable that comes with 2 PCI-e 6+2 connectors on the same cable, like this http://images.bit-tech.net/content_images/2008/09/akasa-powermax-1000w-gaming-psu/pcie-8.jpg )
Operating System: Windows 10 home 64bits
Thank you for your help.
PS: Sorry for my english, not my main language