serves as the fallback executable for Uncharted: The Lost Legacy .
Below is an extensive breakdown of the AVX2 issue, the official fix, performance expectations, and alternative solutions if your game still refuses to launch. Understanding the AVX2 Requirement Crash
, you should first ensure your game is updated to the latest version, as an official patch now provides built-in support for older CPUs. If you are using an older or unofficial version, you can use the to bypass the check manually. Method 1: Official Patch (Recommended)
: This method typically results in extremely low frame rates (often 7–15 FPS) and may cause crashes. Instruction Manual : A community-maintained Guide for Launch without AVX2 uncharted 4 avx2 fix new
) was released by developers and Iron Galaxy in Version 1.3.20812 on November 16, 2022. Official Solution
If your game still fails to boot after applying the latest update, the bottleneck may be a lack of standard AVX (AVX1) support, or a driver conflict. Take the following steps to resolve lingering issues:
When originally launched on PC, thousands of eager players were met with instant crashes. The culprit was a hard instruction set restriction requiring Advanced Vector Extensions 2 (AVX2) support. This locked out gamers using older but capable processors like Intel Ivy Bridge, Sandy Bridge, and first-generation AMD FX/Ryzen series chips. Fortunately, developers Iron Galaxy and Naughty Dog listened to community feedback and deployed an official AVX2 fallback executable fix that permanently resolves the launch issues. serves as the fallback executable for Uncharted: The
If you are running an archival, unpatched release of the game or if you are managing a specialized offline installation, you may still run into the AVX2 crash. In these scenarios, the gaming community has documented two primary manual workarounds. Method 1: Using Intel Software Development Emulator (SDE)
Because the game natively targets standard instructions inside u4-l.exe rather than using a real-time third-party software hook or emulator (which previously caused major frame drops), older processors can run the code smoothly close to their maximum natural capacity.
A: This is key. u4.exe is the standard game launcher that requires AVX2. u4-l.exe is the fallback launcher for systems without AVX2. If you're using a non-AVX2 fix, you should always launch your game using the -l version. If you are using an older or unofficial
: Naughty Dog and Iron Galaxy released an official update that specifically addresses the AVX2 requirement, allowing the game to run on older CPUs that only support AVX (like Intel Sandy Bridge and Ivy Bridge). Steam/Epic Games
Picture the scene: you've just installed Uncharted 4: A Thief's End on your PC, ready to swing through jungles and uncover lost secrets. You double-click the icon, your heart races with anticipation... and then nothing. Or worse, an error message tells you that your CPU is unsupported.