If you are struggling to run the game, check if your system meets the minimum requirements, especially regarding RAM and GPU, as the AVX2 fix only resolves the CPU instruction issue.
On CPUs without AVX2 support, you can still expect playable framerates: uncharted+4+avx2+fix+free
While the free AVX2 fix successfully grants access to the game, it is crucial to manage performance expectations. Performance Factor Impact with AVX2 Fix If you are struggling to run the game,
Let the game sit on the main menu until shaders are 100% compiled. Forcing gameplay early on an older CPU will cause massive stuttering. especially regarding RAM and GPU
Because your CPU is emulating instructions rather than executing them natively, you will experience lower overall FPS compared to modern benchmarks.