Hey guys... So. I`m playing GTA 5. Right after I bought it on Steam. The game lags and stutters on the first time and I think  it has something to do with the Video Memory. So guys my VRam is currently 4096 MB. And it`s supported by the game. But i can`t get the Video Memory  get increased into 4096 megabytes. Which is causing me lag and stuttering. Guys can you help me increase my Video Memory? If so. Just tell me. Thanks guys!