Hi. I just bought a new pc , an i7-4790k CPU , GTX970 and 16gb of ram, and i wanted to replay some games that i could only play with limited fidelity at the time.
So i tried GTA 4 ,but i couldn't get it to work at decent frame rates, it runs much worse than it did on my old pc (GTX 460, AMD phenom x955 and 4gb ram).
Tried every run parameter i found but nothing really helped.
yep, i've got geforce experience installed, and it keeps the driver update. Also, i don't really think that this is a general , system wide issue, since everything else runs great.
It is not the vram bug, I have the same issue with my GTX 780. The game runs like shit even at lowest settings. 20 FPS my ass. I gave up though to my understanding, there are some active mods that improve performance. I havent found them yet though. I just gave up.
have you tried to run the game in compatibility mode? Some games work a little better like that, just throwing out an idea. Also there are ways to set up a certain config file for GTA4 to just utilize x amount of hardware. I would definitely read up on the GTA4 modding community forums, when i was playing GTA4 i had to circumvent options through a .cfg file and i was able to tell the game that i only had 2gb of vram...this was when i had a dual 3gb 6970 config.