I have been experiencing problems with my pc lately I’ve had it for 2 years and all of sudden my cpu was using 100% then that stopped then it went to 3% then my memory went up to 50%. I use it for gaming and editing mostly I have a i7 6700k with 16b ram . Every time I open Sony Vegas it lets me edit for a while then it tells me “not responding then crashes.” When I look at task manager the cpu goes to like 30% then goes back to 0%. Then my memory stays at 50%. Do I need more ram or is my motherboard needs to be replaced? I don’t know what to do it sucks.