AMD FidelityFX Super Resolution 4

Pros

• Substantial improvement in image quality compared to FSR 1 and 3
• INT8 mode provides better quality than previous 'Quality' presets at the same performance level
• Frame generation is considered effective and 'worthwhile' in well-implemented titles
• Competitive performance on newer AMD 9000 series hardware

Cons

• Generally perceived as inferior to DLSS 4/4.5 in terms of raw image quality and artifact reduction
• Noticeable issues with blurriness, smearing, and ghosting in motion for some users
• Significantly smaller library of supported games compared to DLSS
• Reported lack of support for the Vulkan API
• Performance and quality may degrade when Ray Tracing is enabled

Caveats

• Implementation quality varies wildly between different game engines and titles
• Some users report that certain FSR 4 features are locked to newer AMD 9000 series GPUs
• Opinions on visual 'tolerability' are highly subjective, ranging from 'just as good' to a 'blurry mess'

Best for

• Owners of AMD 9000 series graphics cards
• Gamers looking for a viable upscaling alternative on non-NVIDIA hardware
• Titles with strong native implementations like Ghost of Tsushima

Avoid if

• Maximum image clarity and lack of motion artifacts are your primary concerns
• You primarily play games utilizing the Vulkan API
• You require the widest possible compatibility across the largest number of modern games