A memory allocation failure (where the engine fails to properly manage VRAM or system RAM under heavy load),A graphics API conflict (such as DirectX 12 instability or driver-level rendering errors),An unhandled engine exception (where UE4 encounters corrupted data or an unsupported operation).
The crash can occur at any point—during loading screens, server connections, or even mid-gameplay. Below are the most common root causes:
Overclocked Memory (XMP Enabled): While memory overclocking (XMP/DOCP) boosts system performance, some games—including Hell Let Loose—may not handle it efficiently. This can lead to memory allocation instability, especially if the RAM isn’t fully stable at its rated speed.Outdated or Incompatible Graphics Drivers: Unreal Engine 4 relies heavily on GPU drivers for rendering and stability. Older drivers may lack optimizations for the game’s latest updates, causing crashes.Corrupted or Missing Game Files: Improper shutdowns, interrupted updates, or unstable internet connections can corrupt game files. UE4’s integrity checks may fail, triggering the error.
Now that we’ve identified the key causes, let’s proceed with solutions to fix the LowLevelFatalError in Hell Let Loose.
1. Verify Integrity of Game Files
Steam’s “Verify Integrity of Game Files” feature checks your game files to ensure they match the original versions on Steam’s servers. If it finds any missing, damaged, or incorrectly modified files, it automatically replaces them with fresh copies. This fixes common issues like crashes or glitches without affecting your save data or settings and usually takes only a few minutes to complete.
2. Disable XMP Profile from BIOS
Disabling XMP (Extreme Memory Profile) in your BIOS settings can help resolve stability issues. This will reset your RAM to run at its default, stable speed instead of the overclocked XMP speed. While this may slightly reduce performance in some applications, it often resolves crashes in games like Hell Let Loose that are sensitive to memory overclocking. Note: While these steps cover the general process, your BIOS may look different depending on your motherboard brand. For exact instructions, check your motherboard manual or the manufacturer’s support website.
3. Update Graphics Drivers
GPU manufacturers regularly release driver updates that include performance optimizations and bug fixes specifically for new game releases. Keeping your drivers updated helps prevent crashes and can make games run smoother with better graphics.
3.1 For Nvidia Users
3.2 For AMD Users
4. Launch the Game with DirectX 11
While DirectX 12 offers improved performance and additional features, it can sometimes cause stability issues with certain games, resulting in crashes or errors. Switching to DirectX 11 – while older – often provides more reliable performance as it’s better optimized for these titles.
4.1 For Steam
4.2 For Epic Games
5. Underclock Your GPU
If other fixes haven’t worked, underclocking your GPU can help stabilize Hell Let Loose by reducing heat and power-related instability. This process lowers your GPU’s clock speed, decreasing performance slightly but potentially preventing crashes. ⚠️ Important Notes:
Underclocking is not risk-free—improper settings can cause system instability.Only attempt this if you’re comfortable with GPU tuning tools.Monitor temperatures to ensure your GPU remains within safe limits.
Let’s begin: After trying all the solutions listed, if the error still appears, consider contacting the Hell Let Loose support team for further assistance.
