Copy your current update.rpf from GTAV/update/ to a safe location before changing anything.
However, even this stable build hits a ceiling. The stock gameconfig for 1.0.350.1 is tuned for the content that existed in 2018. Modern modders often try to import 2023 and 2024-era mods into this older build for stability, and this creates a resource conflict. The default config simply cannot calculate the memory offsets required for massive car packs like "VanillaWorks" or detailed map mods like "Mega Mall."
Think of gameconfig.xml as a crucial ruleset that tells GTA 5 how to manage its memory and resources. It determines how many vehicles, pedestrians, and objects can be loaded into the game world at once. The original file is balanced for the vanilla experience. Adding mods like car packs or script-heavy mods (like LSPDFR) quickly overwhelms the original configuration, and the game crashes.
You will also need OpenIV to install the file. 2. Step-by-Step Installation Guide for Gameconfig 1.0.350.1
A custom gameconfig, like the one you're looking for, serves as a powerful memory manager. It adjusts multiple key memory pools to give your game the breathing room it needs: