You likely forgot to install HeapAdjuster or Packfile Limit Adjuster .
This is a specific (and slightly older) build of the game that some modders use, especially if their favorite mods haven't been updated for the latest version. You can check your own GTA V version by right-clicking GTA5.exe in the game's root folder, clicking "Properties", and then going to the "Details" tab. gta v version 10 3501 gameconfig download upd
A: It fixes crashes caused by gameconfig limitations (usually when loading mods or spawning cars). If your game crashes without any mods, it may be a different issue. You likely forgot to install HeapAdjuster or Packfile