James Mason said:
Try disabling SLI?
When you run sli vram does not stack so 2gb + 2gb does not equal 4gb, it still acts like 2gb as both card have to store the same information.
So when GTA V recognizes it and says I have a total of 4gb of Graphic Usage in game It's a misunderstanding?
When I run it in SLI the Graphic Settings in GTA V double up to 4gb