The AVX2 issue in Uncharted 4 arises from the game's use of AVX2 instructions, which are not supported by all CPUs. When a CPU without AVX2 support tries to run the game, it may encounter errors, crashes, or poor performance. This can be frustrating for players who want to enjoy the game without interruptions.

Playing Uncharted: Legacy of Thieves on Older CPUs If you’ve been trying to run on an older PC, you likely hit a wall: the AVX2 instruction set requirement . Without it, the game simply wouldn't launch. However, a major official update has changed that, making the game accessible to many more players. The Official Fix: Patch 1.3.20812

You might experience minor micro-stuttering during heavy combat scenes.

Before changing anything, go to your game installation folder (usually SteamLibrary\steamapps\common\Uncharted Legacy of Thieves Collection ) and copy the original files to a safe folder.

to ensure the fix has the necessary permissions to intercept instructions. Performance Expectations While the fix allows the game to launch, keep in mind:

The phrase "uncharted+4+avx2+fix+free" typically refers to community-made patches that allow the game to run on processors that do not support the AVX2 instruction set (a requirement for the standard version of the game).