Permabanned
I don't have it installed, but it's in my steam library. If you give me the settings I'll give it a go.
Presumably everything as high as possible as long as it is playable. That's the thing with your GTA video, Adjust the settings so the ram requirement in the menu asks for more than 4 gb's and tell it too ignore the limit so that it goes over. You should still have playable frame rates.
Will need better proof than that I'm afraid Si. A hitch is not uncommon in a multi gpu setup.
The video these posts are in response too was only a single card set up not a multi gpu set up