Guild Wars 2

I have been crashing constantly over the last few months and need some help to fix it. I was posting in the bug forum but it was probably the wrong one to post in. I have many crash reports and a diagnostic. My PC specs are as follows:

Windows 7 Ultimate 64 bit
Intel i7-2600k
8GB 1600 RAM
Gigabyte GTX560ti 1GB
Corsair force gt 120gb SSD (for OS)
1TB HDD (cant remember brand)
750w Corsair PSU

I’m also getting massive in game lag, especially in zergs or crowded areas.

Here is the Anet log file that should have all the crashes in it.