Guild Wars 2

So when heart of thorns first launched I had a weird bug where when I deploy a siege weapon it sometimes causes my client to crash to desktop. After one of the later patches it was fine for a few weeks. but more recently it has been doing it again. I have tried a fresh install and I have tried both the 32bit and 64bit clients. I also completely uninstalled and removed all the cached install files and registry entries. And still no dice. Only other thing I can think of is something hardware related.

Any help would be much appreciated.