Microsoft is currently testing for Windows on ARM (Prism emulator). However, they have shown no inclination to bring this to x86 Windows for legacy Intel chips.
: These fallback executables use standard instruction sets or original AVX paths to perform the floating-point computations that were previously locked to AVX2. Preserved High-End Performance
The game should now open without the "AVX2 Not Supported" error, even if your CPU is older. Why Was AVX2 Needed in the First Place?
Go to your Library and ensure UNCHARTED: Legacy of Thieves Collection has updated to the latest version. uncharted 4 avx2 fix
: Shaders will take significantly longer to compile on the first launch. Tips to Boost FPS on Older CPUs
For a short time, this rendered the game unplayable on popular budget CPUs and older Intel/AMD processors (such as some Xeon models, older Core i7/i5/i3, and AMD FX series). Fortunately, a definitive fix was released, rendering complex workarounds unnecessary. The Official Solution: Patch 1.3.20812 (November 2022)
To help find the right version or fix tool for your specific setup, tell me: What do you have installed? Are you playing via Steam, Epic Games, or another launcher ? What Windows version are you currently running? Share public link Microsoft is currently testing for Windows on ARM
Click and choose Add by exact name . Type u4.exe and click Add .
Even though Uncharted 4 has no invasive anti-cheat, Steam’s "Steam Input" overlay can conflict with the proxy DLL. Disable the Steam Overlay for this game.
Short guide: Uncharted 4 / Legacy of Thieves AVX2 fix (for older CPUs) Preserved High-End Performance The game should now open
Use a library like MinHook to intercept system calls.
: Community patches are unofficial. The game may run perfectly for an hour and then crash during a specific cutscene or script load. Save your progress frequently.