Now that you are on 1.0.7.0, the game is yours to command, but it needs a little coaxing to run on modern Windows 10/11 systems.
: Downgraded versions use a different save path. Your Complete Edition saves may not be compatible unless moved to %HomePath%\Documents\Rockstar Games\GTA IV\savegames\ Optimization downgrade gta iv to 1070
(Note: If you have a high-end GPU, you can push the availablevidmem number higher. This tricks the game into thinking you have massive VRAM, preventing texture pop-in.) Now that you are on 1