The proxy DLL intercepts the game’s call to DirectX 11. Before initializing the GPU, it hooks the CPU’s instruction decoder. When the game asks for VPMASKMOVD (an AVX2 instruction), the DLL translates it into a loop of MOVDQU (SSE2) operations.
: It is a CPU instruction set used to optimize complex math in games. Before the patch, the lack of these instructions caused the game to crash immediately on launch for many legacy systems.
Final tip: Bookmark the GitHub repository. The developer, RedlineDrifter, has hinted at a v4.0 that will include AVX2 to AVX1 translation for even older Bulldozer-era AMD CPUs. Until then, this new fix remains the gold standard. uncharted 4 avx2 fix new
Before diving into the solutions, it's helpful to understand the core of the problem. AVX2 is a set of instructions used by modern CPUs to accelerate complex mathematical operations, particularly in fields like video encoding, scientific computing, and, of course, gaming. Game developers use it to optimize performance for specific tasks. The issue arises when a game is coded to require AVX2 support without a fallback option for older hardware. At launch, Uncharted: Legacy of Thieves Collection did exactly this, leading to a crash for many users with perfectly capable processors.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The proxy DLL intercepts the game’s call to DirectX 11
The main reasons why new systems require an AVX2 fix for Uncharted 4 are:
At launch, the game strictly required AVX2 (Advanced Vector Extensions 2), which effectively locked out CPUs older than Intel Haswell (4th Gen) or AMD Ryzen. : It is a CPU instruction set used
Title: Uncharted 4 — AVX2 Fix Released (Improved Stability & Performance)
Check and Run as Administrator . 3. Troubleshooting Performance
[Game Startup] │ ├──► Detects CPU with AVX2 ──────► Launches default high-performance engine │ └──► Detects CPU without AVX2 ───► Launches fallback executable (u4-l.exe) How the Fallback System Works