GPU fan is howling in Mud Geyser Map and Fetid Pool

With the new patch (3.6) and the (automatic) changing to DX 11 this issue seems to be solved, no loud fans (testes with Mud Geyser Map and character selection screen).

It seems that I am one of the few who isn't missing DX 9(Ex).

On the other side I have had 2 DX errors (-2147024882 = 0x8007000E = E_OUT_OF_MEMORY) when teleporting to a waypoint or leaving a map by portal. I suspect that DX 11 is using more memory than DX 9?

Edit: The last week I haven't had any errors, so game is running fine for me (with the latest patches).