3 days ago i bought GPU RX590 XFX Fatboy oc+ 8gb. It worked ok for 2 days and on 3rd day during a game fps dropped to 24 and wont go over. After a some testing in furmark and in games i realized it wont move over 300mhz, i know thats normal in idle but it stays that way even in stress test. I tried every single available version of the driver, tried it on 3 different pc's,setting mhz manually but was unable because it wont allow me.
At some point during the countless testing attempts, it started working normally for about 1 minute then again dropped down to 300 and never went up ever again. I need advice?
Thanks in advance.