Guild Wars 2

I have extremely erratic fps. With vsync enabled I run from 60 to 30 up and down. I’ve tried running with crossfire enabled and disabled. Of course, less fps without crossfire, but not much, same symptoms though.

I’d assume I could run everything at the settings maximum and have solid frame rate. However, I may have detected an issue with the shader setting. Medium and low achieve better frame rates. Is this a know AMD glitch?

I am using the 12.11 and most recent caps. Mainly, I’d rather have everything all the way up and have stable framerate. I should be able too turn up all the settings, correct?

My Specs are:

Intel i7 860 @ 4.0ghz
16gb Ripjaw ddr3 1600
AMD 6990 + 6970 Trifire
Intel x25ssd + Velociraptor (gw2 installed)
Asus Maximus III forumula MB
Corsair Pro Series 1200AX PSU
Supremefx XFI

So, disabling hyperthreading via the bios fixed the issue. Everything on high or ultra and smooth. Weird.

My theory is that with hyperthreading disabled, GW2 threads gets the full core’s resources instead of being shared by the virtual logical core.

GW2 is very CPU intensive and taxing on single thread performance and having to share the core’s load with another virtual core makes it get less work done.