I've scoured all I can find and even made that tool that auto sets the affinity. Some servers have a slight jittering, but not an all out slowdown when moving, casting and camping like I get on PEQ. 
 
I am pretty much at the conclusion it's mostly bandwidth and out of our control. 
 
Oh and both clients do it regardless of windowed/draw distance/shaders, etc. 
		
	
		
		
		
		
		
		
			
				__________________ 
				Just another face in the crowd..
			 
		
		
		
		
		
		
	
		
		
	
	
	 |