FSR 4.1 AMD: Real improvements and limitations in RDNA 4

FSR 4.1 AMD and its impact on ray tracing and FPS

The evolution of AI upscaling is no longer just about FPS numbers. At this point, that would be an understatement. What's really starting to matter is something else: whether the image holds up well under motion, whether ray tracing stops seeming like a poorly executed luxury, and, above all, whether the platform allows you to use these improvements or forces you to upgrade your GPU to access them.

AMD has released a new graphic controller which activates the latest version of its AI upscaling for RDNA 4 GPUs: FSR 4.1. The update doesn't completely change the game, but it does refine areas where FSR still raised concerns: it adds official support for Crimson Desert (and Death Stranding 2), incorporates Ray Regeneration 1.1 into the game's ray tracing, and tweaks the upscaler core in "ML-powered" titles. It also improves Ultra Performance mode, which gains speed while still maintaining its usual compromises.

How the image changes: precision and movement

FSR 4.1 Improvement precisely where a player notices whether upscaling is “good” or only appears good in static screenshots. AMD discusses more accurate reconstruction in moving objects and fine elements, and that makes sense because one of the weak points of FSR 4.0 was the tendency to oversmooth certain complex surfaces. Vegetation, fine edges, dense textures: it was easy to notice overly soft or somewhat blocky areas. Iteration 4.1 corrects part of that and recovers structure. It does not magically turn any scene into native resolution, but it does get closer to that goal under real gaming conditions.

(Image credit: AMD)

Ray Regeneration 1.1: Critical Reconstruction

Ray Regeneration follows a fairly clear logic: work with fewer ray tracing samples and reconstruct a richer final image without skyrocketing computational cost. Version 1.1 reinforces contrast, shadows and consistency in reflections and global illumination. Stated that way, it sounds technical, but the practical criterion is simple: if RT only adds weight without visual stability, the user disables it. If the reconstruction improves sufficiently, it begins to be a reasonable option even outside benchmarks.

The Ultra Performance mode also receives adjustments. This is relevant, but not equally for everyone. If you play on a high-refresh-rate monitor and prioritize responsiveness over absolute clarity, it can be a useful improvement. If you are sensitive to artifacts or loss of detail at close distances, the FPS benefit may not be worth it. That is precisely the point sometimes lost when everything is reduced to “more performance”: not all usage profiles value that trade-off equally. For complementary content, also see UDNA architecture in PS6 and Xbox Next: more than just numbers.

AMD validated these improvements in Crimson Desert And it confirms that FSR 4.1 is available in all "ML-powered" titles. It's reasonable to interpret this as an extension of the ecosystem already being adopted by FSR Redstone. For the average user, this matters less because of the name and more because of a very specific question: if the game already worked well with the previous stack, it should now benefit without forcing you to tweak unusual settings in Radeon Software.

There's also a broader interpretation. FSR 4.1 shares the same base model as PlayStation Spectral Super Resolution (PSSR) 2. Mark Cerny confirmed that the enhanced version of PSSR for PS5 Pro is based on the same foundation, within Project Amethyst, the collaboration between Sony and AMD on AI graphics. This isn't just a technical curiosity. It suggests that AMD is refining a technology that isn't isolated to PCs, but can influence how AI rendering is stabilized on both consoles and desktops.

Just tried FSR Upscaling 4.1 in a few PC games. It’s based on the same neural network as the upgraded PSSR we released for PS5 Pro… and it looks stunning!Wonderful working with @jackhuynh and the @AMD team as we collaborate on AI graphics tech. Big win for Project Amethyst 🙂 pic.twitter.com/yhgwJG716EMarch 19, 2026

However, where AMD faces criticism isn't in the quality of FSR 4.1, but in its scope. Its functional distribution remains limited to RX 9000-series GPUs. This decision lends technical coherence to RDNA 4's ML approach, but it also leaves many users out just as the improvement is becoming more compelling. Nvidia, with DLSS 4.5, maintains a broader strategy towards previous generations. AMD, on the other hand, is making something quite clear, even if it's not phrased this way: if you want the full experience, you need to upgrade your hardware.

That nuance weighs heavily on the true assessment of FSR 4.1. As a technical advancement, it's solid. As a platform argument, it's more debatable. If you're already on an RX 9000 series card, the improvement is welcome and quite logical. If you're coming from an older Radeon card, what you see here might feel less like a shared evolution and more like a commercial boundary disguised as a technical requirement. And that kind of interpretation, for better or for worse, is also part of the product.