Uncharted 4 Avx2 Fix New Jun 2026

Once the game launches, head straight to Graphics Settings:

For the Epic Games Store version, add these to the Additional Command Line Arguments in the launcher’s settings.

If you are the owner of an older but still capable CPU (like Intel’s Sandy Bridge, Ivy Bridge, or first-gen Ryzen without AVX2), you have been locked out of Nathan Drake’s final adventure. Until now.

The definitive solution for the issue is the official game patch released by developer Iron Galaxy, which completely removes the AVX2 CPU restriction and introduces automatic fallback executables ( u4-l.exe and tll-l.exe ) for older processors. When UNCHARTED: Legacy of Thieves Collection initially launched on PC, thousands of players with older, yet capable hardware were locked out. The game simply refused to launch, crashing straight to the desktop because it strictly required Advanced Vector Extensions 2 (AVX2) instruction sets. uncharted 4 avx2 fix new

Before the official patch, community members developed "fixes" using tools like Intel SDE (Software Development Emulator) or custom hooks to bypass the CPU check. Performance Warning:

Leo’s final setup:

Modify the shortcut's "Target" properties to include -hsw -- [GameExecutableName].exe . Once the game launches, head straight to Graphics

Save the file as Launch_Uncharted4.bat (ensure you change "Save as type" to "All Files").

The developers optimized the executable file to dynamically scale back or bypass certain AVX2 requirements if an older CPU is detected. Verify Integrity of Game Files: Open your Steam Library .

Processors lacking AVX2 are generally over a decade old. Paired with modern games, these CPUs will experience heavy bottlenecks, leading to severe stuttering during heavy combat sequences or cinematic transitions. If you enjoy modern PC gaming, upgrading to a CPU platform that natively supports AVX2 (Intel Haswell 4th Gen and newer, or AMD Ryzen) is the only definitive, permanent fix. Share public link The definitive solution for the issue is the

Early versions of these fixes were prone to crashing during heavy physics sequences or cutscenes. "Newer" versions (often found on GitHub or specialized modding forums) have improved stability, but they are not official and can be broken by official game updates. Installation: Usually straightforward—you typically drop a file like

Launching directly from the store interface will seamlessly determine if your computer needs the fallback path. Performance Considerations for Older CPUs

40–60 FPS depending on GPU; potential processing bottlenecks during dense physics scenes. Lock framerate to 40 or 60 FPS; lower environmental detail. Completely Unsupported Heavy stuttering; severe frame drops. Hardware upgrade recommended.

Right-click in your Steam Library. Select Properties , then click the Installed Files tab.

Before official fixes were perfected, community modders developed a workaround using an Intel software tool called or custom script wrappers. These tools mimic AVX2 instructions via software, tricking the game into thinking your CPU natively supports them. Step-by-Step Installation