Heap Adjuster for GTA 5 — Fix Crashes with Heavy Mod Loads 2026

Heap Adjuster for GTA 5 — Expand Game Memory Limits

Heap Adjuster is an essential utility for anyone running a heavily modded GTA 5 installation. By default, Grand Theft Auto V allocates a fixed amount of heap memory for game operations. When you install dozens of scripts, add-on vehicles, texture mods, and custom maps, this default allocation becomes insufficient, leading to random crashes, freezes, and "out of memory" errors. Heap Adjuster dynamically increases the game's memory heap size, giving GTA 5 the breathing room it needs to handle massive mod collections.

Why You Need Heap Adjuster

Every mod you install consumes memory. Add-on vehicles need memory for their models and textures. Script mods like LSPDFR and its plugins allocate memory for AI routines, callouts, and traffic management. Graphics overhauls like NaturalVision Evolved and QuantV load high-resolution textures that demand significantly more VRAM and system RAM. Without Heap Adjuster, GTA 5 simply runs out of its pre-allocated memory space and crashes without any meaningful error message.

How It Works

Heap Adjuster works as an ASI plugin that hooks into the game's memory allocation routines at startup. It intercepts the default heap size configuration and replaces it with a much larger value, typically doubling or tripling the available memory pool. This happens before any mods load, ensuring that all subsequent memory requests from scripts, vehicles, and textures can be fulfilled without hitting the original limits.

Installation

Place the HeapAdjuster.asi file in your GTA 5 root directory (the same folder as GTA5.exe). The mod requires Script Hook V or an ASI loader to function. No additional configuration is needed — it works automatically on game startup. For best results, combine with a custom gameconfig.xml and Packfile Limit Adjuster to create a fully optimized modding foundation.

Recommended Mod Combo for Stability

The "holy trinity" of GTA 5 modding stability consists of three tools working together: Gameconfig (raises entity and vehicle pool limits), Heap Adjuster (expands memory allocation), and Packfile Limit Adjuster (increases the number of DLC packs the game can load). Installing all three virtually eliminates crashes related to mod overload, letting you safely run 500+ add-on vehicles, multiple script frameworks, and graphics overhauls simultaneously.