Losing all inputs for a few seconds (Mouse and Keyboard)

Mine does that too some days but not others and only for a 1 to 2 seconds at a time. I even swapped out my new keyboard as I thought the W key was sticking. Some days I can play for 2 hours but the 3rd hour things usually start to act up. I have no clue what causes it but it is very annoying. Like walk or crawl to the edge of a roof and end up falling off. Or freezing up momentarily and get killed every time. Arrgghhh!