Input delay, I press my mouse or move it and a second later (exaggerating, but the input delay is very noticeable) is that it moves on the screen, I know it is not my mouse and keyboard because it also happens with controller, I have changed everything from my pc in a time of 6 months and the only thing left for me to change is the psu. So by discard I think it is the psu that gives me input lag. (in case you ask, also change the monitor)