The answer is . Some of the largest vehicle packs (like Vanillaworks or Realism Dispatch Enhanced ) were optimized around the 1.0.2189 memory pool structure. Upgrading to a newer config often breaks the specific ID references in these older packs.
For modders, the vanilla gameconfig.xml file is a cage. By default, Rockstar Games designed this file to handle a specific, limited number of vehicles, props, peds, and streaming assets. The moment you install a single car pack or a dense map modification, you hit a wall. gta 5 gameconfig 1.0.2189
By expanding memory pools, removing vehicle limits, and allowing the engine to breathe, this single XML file transforms a fragile game into a robust modding platform. The answer is