I guess you don’t mean cpu stutter? You mean when the picture in oculus is very and stuttery.   
When you get that, press ctrl and 1 on the numpad to remove the oculus ASW. Then press ctrl and 4 to enable ASW again.    
Ctrl 1,2,3,4 on the numpad have different options how oculus renders the picture.     
Skickat från min iPhone med Tapatalk