Guild Wars 2

For an individualized response, you can contact the Tech CS Team via the ‘Support’ link above/below and ‘Submit a Request’ for assistance.

Good luck.

Personally I would try either removing 1 Graphics card or breaking out of Crossfire mode.
DX9 being an old DX can have some issues with newer cards in SLI/Crossfire mode.

If that fixes it you might want to try installing old drivers and re-enabling crossfire seeing if older drivers work.

Another thing to check is that the motherboard on board graphics is disabled in control panel, these can also cause issues more within Windows and it gets confused which memory space it should be using.

Hope that helps.