The search results suggest you are likely looking for a Gameconfig file specifically for Grand Theft Auto V (GTA V) version 1.0.350.1, which is an older version of the game often found in certain repacks or specific game builds. Purpose of Gameconfig

Update the Game: If possible, update to the latest version via Steam, Epic Games, or the Rockstar Launcher to ensure compatibility with modern mods .

To make a custom gameconfig work effectively, modders typically pair it with: How To Install Gameconfig In GTA 5 - Step By Step

Issue 2: Conflicting Vehicle Meta Files

The gameconfig allocates slots, but your vehicle mods might be trying to use duplicate IDs. Fix: Check the dlc.rpf of your latest vehicle. Ensure the <modelName> is unique and not clashing with the base game or other mods.

Crucial Note: Always ensure you have the updated versions of these prerequisites before touching the gameconfig.