No I am not, I just tried it for a few hours with no problem. Tested on WIndows 10 X64 with 2x RX 480 in Crossfire at 2K resolution.
If its beta then its testing phase driver.Try 15.7.1 this iis windows whql and performance way above betas. Ive tested betas versus and the whql perform much better . If u have any questions Ill be sure to help u solve your problems .