After trying stopping and disabling WSearch, superfetch and BIT all worked temporarily. the real culprit seemed to be the page

[Nitin Krishna]

Does this reduce gaming performance

 

[ebm9000]

The pagefile? It will only noticeably affect performance if almost all of your RAM is being used; it uses space on the hard drive/SSD as "RAM". You can reduce this amount or move it to another drive, but I don't recommend disabling it entirely.