Gpu core clock and gpu usage drops in games

Hi,



I have Gigabyte 1080 Xtreme. After upgrade to Windows Anniversary i have weird problem with fps spikes in GTA V and Rise of Tomb Raider.



In GTA V and Rise of Tomb Raider i am getting random fps dips for a second. During fps dip there is core clock drop for example from 1975mhz to 291mhz. During this moment there is GPU LOAD,Core clock and voltage drop.



Please Help.



Thanks ,



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