AMD R9 290x card DX11 issues

HI there, I have been having issues where if I am in DX11, when teleporting to various areas, the game will freeze during the teleport phase. Also alt-tabbing out will freeze the game as well. DX9 works fine but DX11 will not. When Heavensward was first brought out, DX11 worked fine, however, after one of the earlier patches this problem has been happening and for what I cannot seem to fix it. Just wondering if anyone else has this issue or any work around that may work.

Thanks :)

I am having these EXACT issues with a 290x, I thought I was the only one. Can we please get some information on this? It is extraordinarily annoying and I've never had these issues pre 3.2.