Has anyone had any bad experience with SAPPHIRE? Did they do good on a RMA? I recently got my Nitro+ RX 480 8GB OC Edition, and the fan isn't correctly responding to the heat of the unit, and when it hits 50-51c (which is warm, but not really hot) it'll freeze to a green, blur, or red screen and the computer will either lock-up or restart... I got in contact with them and starting the RMA approval process. Just wondering if anyone has had issues. I basically gotta run Speedfan with GPU fan at 100% if I want to eve use Minecraft on the thing, or a what, decade old game such as Warcraft III I just picked back up. Just meh.