Below is a list of various command line options that can be used with Grand Theft Auto IV (4) (external link) on the PC:
Tools
| -benchmark | Runs the benchmark tool and exits the game |
| -help | Displays a list of command line options |
Graphics
| -renderquality |
(0-4) |
| -shadowdensity | (0-16) |
| -texturequality | (0-2) |
| -viewdistance | (0-99) |
| -detailquality |
(0-99) |
| -novblank | Disable vsync |
| -norestrictions | Do not limit graphic settings within the game |
| -width | |
| -height | |
| -safemode | Runs the graphics in the lowest setting possible |
| -frameLimit |
Limits frames to a multiple of the refresh rate i.e. if your refresh rate is 60Hz then setting this to 1 would locks the frame limit at 60 |
| -refreshrate | |
| -fullscreen | |
| -windowed | |
| -availablevidmem | Set amount of available physical video memory |
| -percentvidmem | Percentage of video memory available to the game |
Audio
| -fullspecaudio | Force high-end CPU audio |
| -minspecaudio | Force low-end CPU audio |
System
| -noprecache | Disable the precaching of resources |
| -nomemrestrict | Disable memory restrictions |
You can these commands easily by creating a commandline.txt file within your default GTA IV install folder (the default is C:Program FilesRockstar GamesGrand Theft Auto IV), put each command on its own line to run multiple commands at once.
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