Built my new setup 1 week ago(r5 3600,rx580,2×8gb ram)..i was playing SOTTR..suddenly one steam message from steam came and my gpu usage dropped down from 90 -100% to 10-35%.. Exactly same thing happend two days in a row..after i restart my pc and started playing the game , the gpu usage went back to normal...can somone tell what caused the problem?