it is the resolution of the textures and such in use in the game, nothing “wrong” with it. the buy posting his res uses a MUCH lower resolution than you ultimately. Having said that, 2GB of VRAM will net medium textures max everything else @ 1920x1080. you need 4GB for maxed out, being your resolution is much higher than that, you need more than 4GB, if you had a 8GB card you’d be fine, there is a REASON they exist.
Get used to this too, as this is going to get much worse this year for more and more games, DX12 will help you in SLI but that is far too complicated to get into on a game forum post right now, nut until then, you will need more than 4GB VRAM for your rest on a lot of the high graphics games this year, and definitely next year for most everything.
Side note: GTX690 user here, know what you’re going through, only worse due to 2GB card running 1920x1200 haha