: If the game detects a CPU without AVX2 support, it now automatically switches to a fallback executable: u4-l.exe for Uncharted 4 or tll-l.exe for The Lost Legacy.
The developers addressed this limitation seamlessly via the game's update. Instead of completely removing AVX2 code—which would lower performance on modern machines—the team implemented an automated fallback executable system .
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If you are using a modified, standalone version of the game or if your desktop shortcuts are behaving erratically, you might have multiple icons or be launching the wrong application file. You can manually bypass the standard launcher by accessing the installation folder. PC Uncharted 4 - Patch 3 Update v 1.3 AVX2 Support
The absolute best and safest way to apply the is simply letting your game client update. Iron Galaxy rolled out Version 1.3 (and subsequent stability updates) to completely restructure how the game detects your system's hardware. How the Official Fix Works: : If the game detects a CPU without
When arrived on PC, gamers with older processors faced an unexpected roadblock: the game refused to launch, crashing instantly due to a strict hardware instruction requirement known as AVX2 (Advanced Vector Extensions 2) . This constraint isolated a significant portion of the PC community using classic, highly capable chips.
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Players with newer CPUs that support AVX2 instructions have reported performance issues, including stuttering, frame rate drops, and even game crashes. This is because the game's engine, developed by Naughty Dog, is not optimized to handle AVX2 instructions efficiently.
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