Create a text file named ‘commandline.txt’ in the main GTAIV folder and put the following statement inside it:
-availablevidmem 2.0
If that doesn't work, try increasing the number to one of the following.
-availablevidmem 3.0
-availablevidmem 4.0
-availablevidmem 5.0
-availablevidmem 6.0
etc.
Pictured: An example of how -availablevidmem 10.0 would look on your PC screen if setup correctly. Important parts are highlighted in yellow.
Note that these command lines can be added immediately after the last quotation mark in the target parameter of the program shortcut.
- Locate the shortcut to the video game on your desktop.
- Right click the file and select Properties.
- Under the shortcut tab, you will see an area that says Target, this will list the exact location of the file within quotation marks.
- Modify the Target adding the command line variables after the last quotation mark.
- Press apply and start your game via the shortcut.
If you are using Steam, please try:
Properties of game>Launch Options>Add: -nomemrestrict -norestrictions
If the issue still occurs, please be sure to attach a DxDiag file to your ticket and also let us know how much VRAM is detected by GTA at the bottom of the Graphics page.