: You will typically find files like com_intel_sde.dll or a modified u4.exe .
The Uncharted 4 AVX2 Fix: How to Run Legacy of Thieves on Older CPUs
This issue is almost always tied to instruction set requirements. If your CPU lacks AVX2 support, the game engine cannot execute its code, causing an instant crash. Understanding the AVX2 Requirement uncharted 4 avx2 fix
Because the PlayStation 4 and PlayStation 5 both use architectures that support these instructions, the PC port was built with these requirements baked into the engine. If your CPU lacks this feature, the game simply doesn't know how to process those specific commands, leading to an instant shutdown. The Solution: The Uncharted 4 AVX2 Fix
Right-click the game > Properties > Installed Files > Verify integrity of game files . : You will typically find files like com_intel_sde
: The game now detects if a CPU lacks AVX2 support and automatically switches to a fallback executable. Uncharted 4 uses u4-l.exe for older CPUs. The Lost Legacy uses tll-l.exe for older CPUs.
When the collection launched, Iron Galaxy and Naughty Dog compiled the game's executable binaries to require AVX2 instructions. AVX2 is an extension to the x86 instruction set architecture that accelerates vector calculations, common in heavy physics modeling and audio processing. Understanding the AVX2 Requirement Because the PlayStation 4
: By using separate executables, users with newer CPUs can still benefit from AVX2 performance gains without being held back by code compatible with older hardware. Other Fixes
Let me know in the comments if the AVX2 DLL wrapper worked for your specific CPU model – user reports help the community keep the fix updated.
Some users have shared custom file sets (often DLLs) that bypass the AVX2 check. These are typically pasted directly into the game's root directory.
Within 72 hours of the game’s release, a Russian modder on GitHub released a custom version.dll or winmm.dll proxy. This method is cleaner than SDE because it patches the game’s import table to skip the AVX2 check entirely.