Wow, here’s something unexpected. After reading a few posts up about removing the latest .net 4 security updates improving performance, I decided to try something similar. In my case, because I use almost no programs that require it, I uninstalled .net using the methods I linked above, and then used the uninstaller program also linked.
My stuttering when turning around, gone. My frame rates in Lions Arch, up by 10-15 fps. My fps in WvW, with everything maxed, now more close to 50 in heavy combat as opposed to the low 30’s. Subjectively, the game feels a LOT smoother.
I won’t claim this will fix you problems, I can only claim that doing it did improve my personal performance on a i5 3570k at 4.5 with a GTX 670 at 1250/3700.
One other thing that’s still too early to tell if it sticks: I’ve had trouble keeping my 670 at max clocks in WvW combat. More specifically, because the game is so CPU dependent, the card clocks down to slower speeds at times (as the 6xx series is supposed too). The problem I’ve had is that after doing this is often gets stuck and doesn’t clock back up. When playing just now, I noticed the card clocking down when no required…and clocking back up in heavy combat scenes as it is supposed to do, without getting stuck. This one I’m still uncertain about, I’ll need more WvW time to determine if it’s fixed. But, the removing .net 4 did improve my performance, in a very measurable way.
If you would like to remove .net, please first make sure you have no critical programs you use that require it, or at least be cognizant of what will stop working when it’s gone. Usually it’s helper programs like the Razer synapse app in my case.
If you’re comfortable removing it, follow these steps:
http://revenmerchantservices.com/post/Remove-net-framework-40.aspx
http://blogs.msdn.com/b/astebner/archive/2008/08/28/8904493.aspx
If removing it gives you no improvement, or you need .net back, just re-install it from here:
http://www.microsoft.com/en-us/download/details.aspx?id=17851
Some people have also installed the original package and NOT the updates, which seem to be the culprit, you can try that as well.
I wont promise you a miracle, as we’ve seen, different things seems to work for different people, this just worked well for me.