Uncharted 4 Avx2 Fix
The journey to a fix was a multi-step process, involving temporary community workarounds and, eventually, an official solution from the developers.
Intel Core i7/i5/i3 processors from the Ivy Bridge (3rd Gen) era or older. Intel Pentium and Celeron budget chips. AMD Phenom, FX-Series, or early APUs. Step 1: Check Your Official Game Version
The tool intercepts the game's AVX2 calls, translates them into multiple smaller instructions your CPU can understand, and passes them back.
: Drag and drop the extracted emulator files (usually including an sde.exe or a custom modified .exe / .bat starter script) directly into the main folder alongside u4.exe .
If you are running on older hardware, ensure your graphics drivers are updated to the latest version, and consider lowering graphic settings to "Low" or "Medium," particularly shadows and volumetric lighting, to ease the load on the processor. Final Troubleshooting Steps uncharted 4 avx2 fix
The most important "fix" for the Uncharted 4 AVX2 issue is to .
The Uncharted 4 AVX2 Fix: How to Run Legacy of Thieves on Older CPUs
Initially, the PC gaming community hoped that Iron Galaxy or Naughty Dog would release an “AVX2 fallback path” in a patch. Many modern games (e.g., Ratchet & Clank: Rift Apart , The Last of Us Part I ) eventually added a software fallback for older CPUs.
Scan the game memory for AVX2 opcodes (e.g., VZEROUPPER , VEXTRACTF128 ). The journey to a fix was a multi-step
: You may experience a 15% to 30% drop in overall FPS compared to what your GPU should theoretically output.
Antivirus software hates DLL injection. You will likely need to add an exception to Windows Defender. Furthermore, online features (if any remain) may flag this as a modified executable, though Uncharted 4 is single-player.
Right-click the game executable and select "Run as administrator" to eliminate permission issues.
This means you don't need to do anything manually. The game just works—provided you have the latest patch installed. Newer CPU users continue to get the full AVX2 benefit, while older CPU owners can finally play without performance compromises. AMD Phenom, FX-Series, or early APUs
This method does not emulate; it simply deletes the CPU check. The game may behave unpredictably (random physics glitches, audio popping) if it tries to use an AVX2 instruction that doesn’t exist. However, it offers native performance.
Naughty Dog’s engine, rebuilt for the PlayStation 4 and ported to PC by Iron Galaxy, was optimized heavily around these instructions. The PS4 natively supported AVX2 via its Jaguar APU. When the porting team recompiled the game for Windows, they left the AVX2 flag enabled in the compiler settings.
: Shaders will take significantly longer to compile on the first launch. Tips to Boost FPS on Older CPUs
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
: If the system lacks AVX2, the game automatically redirects the launch to a specialized "Legacy" executable: Uncharted 4: A Thief's End Uncharted: The Lost Legacy Instruction Emulation/Rerouting
