The most important news for players is that on November 16, 2022, specifically to address this issue.
If you are looking for a way to play Uncharted 4 without AVX2 support, you no longer need to rely on unstable third-party "fix" downloads or external emulators. The Official Fix: Patch 1.3.20812
Since the official 1.3 update, these manual workarounds are obsolete for most users. How to Check if Your CPU Supports AVX2 uncharted+4+avx2+fix+free
AVX2 was introduced with the Haswell (4th Gen) architecture. If your CPU is older (e.g., i7-2600K, i7-3770K), you lack AVX2.
For many PC gamers with older hardware, launching (part of the Legacy of Thieves Collection ) was met with a frustrating "unsupported CPU" error. This was due to the game's initial requirement for AVX2 (Advanced Vector Extensions 2) , a processor instruction set that many older—yet still capable—CPUs like the Intel Sandy Bridge (i7-2600K) or Ivy Bridge (i7-3770K) do not possess. The most important news for players is that
If you own the game on Steam or the Epic Games Store , simply update your game to the latest version. This official "fix" is free and included in the standard game files. Why You Should Avoid "Free Fix" Downloads
AVX2 support began with Excavator and Ryzen processors. How to Check if Your CPU Supports AVX2
Before the official patch, users used the Intel Software Development Emulator (SDE) to bypass the check. This method is highly inefficient and often results in unplayable frame rates (around 10–20 FPS) because your CPU has to emulate complex instructions it wasn't built for.
The patch adds support for older CPUs by detecting the lack of AVX2 and automatically switching to a fallback executable ( u4-l.exe for Uncharted 4 or tll-l.exe for Lost Legacy).
Download CPU-Z to see a list of instructions supported by your processor under the "Instructions" field. System Requirements Overview