Okey so ive been having a major issue in terms of gaming performance in certain games. For this example its Arma 3

i dunno whats happening but just messes up my FPS in that game! i cant play for more than 30-40 minutes straight without encountering the problem!

here is a snippet of what happens when my performance dips in A3

as you can see my hard drive is taken over by system (PID 4) and other background processes like taskmgr etc and i dunno why this is!

majority of other games i play im completely fine just with arma i have problems! and considering arma is CPU and Hard disk Heavy, i kinda need all that performance in order to maintain 60+FPS

anyone got any tips in order for this to stop ?