If your frame rate tanks, try lowering "Shadow Resolution" or "Anti-Aliasing" while keeping the texture pack on; textures usually affect VRAM more than GPU processing power.
Navigate to your Sleeping Dogs installation folder (usually C:\Games\Sleeping Dogs ) and copy your "Data" folder to a safe place. If your frame rate tanks, try lowering "Shadow
Improved surfaces that make the rainy streets of Hong Kong look truly cinematic. How to Download for Non-Steam Versions If your frame rate tanks