If you found ffx_fsr2_api_vk_x64.dll alone on a random website (not from a known modder like or a trusted GitHub repo), do not download it . DLLs are executable code and can contain ransomware or keyloggers. Always verify the source.
In short, this is a critical backend component used by PC games and rendering software to enable AMD's upscaling technology on systems utilizing the Vulkan API. ffx_fsr2_api_vk_x64
The ffx_fsr2_api_vk_x64 file is a piece of excellent, lightweight middleware. It represents a triumph in open-source graphics engineering, providing high-quality upscaling to users who cannot afford expensive Nvidia hardware. If you found ffx_fsr2_api_vk_x64