RadeonTuner enables unofficial FSR 4 driver injection in games with RDNA 3.5 iGPUs

AMD is actively working on a trimmed-down version of FSR 4 for RDNA 3/3.5 iGPUs, but there is no confirmation of when it will be arriving. In the meantime, a YouTuber has discovered a method of injecting FSR 4 at the driver level that works with RDNA 3/3.5 iGPUs. Channel AncientGameplays published a video showing how to do this using a third-party tool known as RadeonTuner.

RadeonTuner is designed to serve as a lightweight alternative to AMD's Adrenalin software. The application is functionally very similar to Adrenalin, with support for GPU overclocking and fan tuning. The application also allows users to change driver-related graphics settings and display settings. The main feature AncientGameplays was most interested in is the app's built-in overrides for FSR upscaling, frame generation and ray regeneration.

In testing with Spider-Man 2, the YouTuber discovered that RadeonTuner uses the same FSR override method as AMD's Adrenalin software to inject newer iterations of FSR into games. With the FSR override disabled, Spider-Man 2 showed upscaling support for FSR 3.1.5, but turning on the override changed the FSR version in-game to FSR 4.1.1. Spider-Man 2 also showed an asterisk next to the FSR 4.1.1 name, confirming the FSR version was being injected from the GPU driver. The YouTuber also tested several games using this FSR override method using a Strix Halo APU with an RDNA 3.5 iGPU and found it worked almost flawlessly (some issues with shadows and reflections reportedly occur at aggressive upscaling settings).

Using RadeonTuner's built-in FSR override is likely the best method to run FSR 4 unofficially on RDNA 3/3.5 iGPUs currently. Other hacks exist that also enable FSR 4 compatibility with these iGPUs, but injecting FSR 4 at the driver level unlocks compatibility with games using strict anti-cheat programs. However, it is worth mentioning that RadeonTuner is not an official application from AMD, so use it at your own risk.

AMD introduced FSR 4 support to RDNA 3 desktop GPUs recently with the release of Adrenalin driver 26.6.2, marking AMD's first step in supporting older Radeon hardware with its machine-learning version of FSR. AMD was also able to make the RDNA 3 version without compromising image quality compared to the RDNA 4 version.

Frequently Asked Questions

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Question #1

Will using RadeonTuner's FSR override on an RDNA 3.5 iGPU allow frame generation and ray regeneration features in addition to FSR 4 upscaling?

Yes. The article says RadeonTuner’s built-in overrides can inject FSR 4 into games on RDNA 3.5 iGPUs and that the app includes overrides for FSR upscaling, frame generation and ray regeneration. The YouTuber testing showed FSR 4.1.1 being injected via the override (Spider-Man 2) when enabled.

Answered

Question #2

Are there known game-specific visual issues (like shadows or reflections) when using RadeonTuner's FSR 4 injection at aggressive upscaling settings on RDNA 3/3.5 iGPUs?

Yes. The YouTuber's testing with RadeonTuner on an RDNA 3.5 iGPU reported some issues with shadows and reflections at aggressive upscaling settings. (From the primary article.)

Answered

Question #3

Does RadeonTuner's driver-level FSR injection bypass compatibility problems with games that have strict anti-cheat systems compared to other unofficial hacks?

Yes. The article states that injecting FSR 4 at the driver level via RadeonTuner unlocks compatibility with games using strict anti-cheat programs, unlike other unofficial hacks. It also notes RadeonTuner is not official software and should be used at your own risk.

Answered

Question #4

What risks or limitations should I expect when using RadeonTuner (a non-AMD app) to enable FSR 4 on RDNA 3/3.5 iGPUs instead of waiting for AMD's official trimmed-down FSR 4 release?

RadeonTuner is not an official AMD application, so using it carries risk and you must proceed at your own risk. Unofficial driver-level FSR 4 injection can cause graphical issues in some games (for example, shadows and reflections problems at aggressive upscaling settings were reported). While driver injection unlocks compatibility with games that use strict anti-cheat, it is still unofficial and may lack AMD support or stability guarantees until AMD releases its trimmed-down FSR 4.

Answered

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AMD is currently working on getting FSR 4 working on RDNA 3/3.5 iGPUs (as previously mentioned), the Steam Machine, and RDNA 2 GPUs (the latter of which will be arriving in 2027).