Crashes, hangs, dies game. (Mirror's Edge Catalyst)

In General, this is my situation people, hoping someone can help! For starters, here is my hardware: AMD FX8320 3.50, 8gb, Radeon R9 270x 2 gb. The crux of the problem: the game automatically sets the settings to medium, but I put on high and maximum and FPS gave seems good, but! After 5-10 minutes of the game, even at medium, there are freezes or starts flashing textures or some other stuff, like DirectX errors. Once even the computer hangs tightly. Checked on heating, heated not more than 63 degrees - that seems to be pretty normal temperature for a graphics card. (In the same Mafia 3, the temperature is kept at the same level, but there is nothing similar was observed). I tried to put the settings on low, everything seems to be fine but I played on them for about 15-20 minutes max. What could be the problem? Nothing can not understand...by the Way, I played Battlefield 1 beta test and there was the same Chechnya! It frostbayt that effect on my vidyuhi?!
Driver have the latest!