I got 32:9 working by turning On and Off my PIP in the monitor UI. Everything works really good so far at 32:9 so im not sure why its not supported. Have not tested that long.
No G9 here, no pip but noticed that when the game runs in full screen, changing down resolution and reverting back to original one does the trick too
Awesome! That is essentially what the PIP is doing by diving the screens so that makes sense!