I've downgraded from 7700k (windows 10 x64 installed) to 4790k Specs: asus z87 pro corsair vengeance 8GB 1866mhz Seagate 3x 3tb 7200rpm Cryorig H5 ultimate cooler Corsair VS550 new gpu Zotac 1050ti OC. I'm having stuttering issues in almost every game. Like in cs:go when I am firing fps drop from 254 to 120. In Gta V while driving fast it was stuttering mostly after 10mints fps drops from 60-70 to 30-35. Temps were fine cpu temps don't go above 61c and gpu 59c. I've already run ddu and did clean install nvidia graphic drivers. No apps running in background. Do I need to clean install windows 10 also as I have change my whole pc setup ? What could be done to overcome this stuttering issue. Any help would be highly appreciated.