This file is a specific component of the AMD FidelityFX SDK used for implementing FSR 2 upscaling in applications running on the Vulkan graphics API (indicated by vk) on 64-bit systems (indicated by x64).
A common reason for this DLL to fail is missing dependencies. ffx fsr2 api vk x64dll work
// Create Vulkan context, swapchain, etc.—which usually indicates a conflict between this DLL and outdated GPU drivers or a mismatch in the Vulkan runtime version. This file is a specific component of the
Architecture: Designed for 64-bit (x64) Windows environments. you may run into chain-loading issues.
If the DLL is present but FSR2 is grayed out or crashes on launch, follow this forensic checklist:
If you are playing a title that supports FSR 2 via the Vulkan API, you may encounter errors regarding missing files. The most common cause is a corrupted or missing ffx_fsr2_api_vk_x64.dll. To fix this:
If you are running a game on Linux (via Proton/Wine) or using DXVK on Windows to convert DirectX to Vulkan, you may run into chain-loading issues.
VK_KHR_get_memory_requirements2VK_KHR_dedicated_allocationVK_KHR_buffer_device_address (for FSR2 2.2+)