When the game detects a CPU without AVX2 support, it automatically switches to a fallback executable ( for Uncharted 4 or The Lost Legacy Manual Execution: If the game still fails to launch, you can try running the file directly from the game's installation folder. Requirement Check:
If you have the latest patch but still experience crashes on an older CPU:
While there is no official "AVX2 fix" for Uncharted 4: A Thief's End