In GTA V, the original gameconfig.xml file has strict memory limits for how many vehicles and pedestrians the game can load. When you add custom cars (Add-Ons), you quickly exceed these limits, causing the game to crash.
To use this file, you must have OpenIV installed and set to "Edit Mode". 108771 gameconfig link
: It increases the "pool" limits for vehicles, allowing for "limitless" car mods (often up to 300+ additions). How to Install the 108771 Gameconfig In GTA V, the original gameconfig