FSR for MacOS implementation

Development Rendering
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1

Hi,
I’m trying to add FSR in Unreal Engine 5 (I’m developing in MacOS M2 Max because it’s my only computer) and I can’t find a way to do it. I installed the official plugin from AMD but none of the versions (I tried the v3.1.3a and the v2.2.1c) are compatible for the Mac platforms, in fact when I enable the plugin and restart the project, the project can’t start because of that message:

Plugin ‘FSR3’ failed to load because module ‘FFXFSR3Settings’ could not be found. Please ensure the plugin is properly installed, otherwise consider disabling the plugin for this project.

With ChatGPT I found a possible cause: in the .uplugin file there is no Mac (or Linux) as a compilation platform.
I added “Mac” as a platform and the uproject file recognise the change and set it like that:

{
    "Name": "FSR3",
    "Enabled": true,
    "SupportedTargetPlatforms": [
       "Win64",
       "Mac"
    ]
}

but the error is still present.

Any tips? (Actually any upscaler that works at least a little would be fine, I would really like to have MetalFX but from what I understand it is not supported yet)

UE version: 5.5.4-40574608
MacOS version: Sequoia 15.4.1
CPU: M2 Max (30 gpu cores)

2

Altought i dont knwo the answer to your problem, im simply curious why would you want to implement FSR?

Upsalers are known to make the image blurry. Even the default TAA looks better than them.

3

I need it because the M2 Max GPU is too slow for my world. I made an open world 4x4km and even with world partition and only with foliage (just grass, at 150m max render dinstance), 3 rivers, a lake and an ocean, it runs at 40fps in the editor and around 50 in the final build, no other objects are placed in the scene. The cpu shouldn’t be the problem judging from the Xcode graph and neither the ram occupying 2gb (out of 32 max), so I wanted to try to decrease the rendering resolution and use the FSR, which is the best that runs on all platforms being both DLSS and XESS only for windws (and DLSS only for Nvidia). The TSR doesn’t seem to be that great and as I said MetalFX doesn’t seem to have a version already written for UE5 and I don’t have the graphics and mathematical skills to make it work by creating an ad hoc plugin, the FSR is the most obvious choice. Unfortunately I just started UE5 so I don’t have the skills to optimize the game, or at least I don’t have them yet.

Edit: obviously it will not be a default option but it can be enabled for those who need it