Guild Wars 2

I have awful fps issues (around 5-15fps) in human start zone. My pc is well above the minimum spec, though admittedly the cpu is a bit old, it still isn’t a bad model. I get much better performance in other games using medium detail settings, but the settings on Guild Wars 2 make no difference at all to the performance. The fps is the same be it at 720p at lowest detail, or 1080p at high detail. The CPU is maxed out on the performance monitor, but the gpu is around 20% usage, even at high detail it doesn’t increase enough to spin up the gpu fan at all.
Specs are as follows:
CPU: Intel core 2 duo E7500 @ 2.93ghz
RAM: 4gb dual channel DDR2 800mhz
Motherboard: ASRock G31M-S with intel G31 chipset
GPU: AMD Radeon 7770 1gb GDDR5, ASUS model with factory overclock (1020mhz GPU clock, 4600mhz RAM clock)
The cpu is likely causing some bottlenecking here, but it shouldn’t have this much impact, especially on a game supposedly designed to have a low entry point to play. I have attached the dxdiag file for this pc. I will also be testing it on my laptop, which has a much lower gpu but a core i3 cpu, to see what difference that makes.