hi all i seem to be having an issue with my gtx 780 my frame rates will drop to 1 and then it takes ages to close it or i have to hard reset the pc by the reset button my GPU clock and memory clock seem to max out and the GPU load and memory controller load spike it seems to do it under heavy load also it becomes very unstable when even being overclocked and underclocks its self with even the slightest change to the voltage at first i thought it was the power supply due to it only having 600w so i upgraded to a 1000w and the problem still persist anything over the stock speeds and it gets very unstable so it's kept at stock speed it's always been unstable in the overclocking area but no issues with it and the stock speeds until now