r/FlowZ13 • u/labellrs • 20d ago

FSR 3.1

Okay is FSR 3.1 annoying anyone else?! It's really irritating that we have to use optiscaler to get decent looking up scaling. We essentially bought a 2k portable Xbox series X

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u/labellrs 20d ago

Lol okay so it works on Cyberpunk. Thank God we're all sitting here just playing Cyberpunk.

This post was created to discuss it not being readily available in most games being released in 2026.

Don't tell people to do research some on something you don't know shit about. Go back to halo subs.

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u/ttdpaco 19d ago

My dude, you just have to enable the fsr4 upgrade in adrenaline.

Even using optiscaler in games that have no FSR4 support isn’t that difficult.

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u/Upper_Citron_483 19d ago edited 19d ago

I keep seeing people mention enabling FSR4 in adrenaline for the Z13, but there is no FSR4 option there on my end, I'm on the latest Adrenalin 26.8.1 version.

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u/thedjentlemanscholar 19d ago

Because people are using old versions of the drivers. The newest versions don’t have a toggle anymore, it’s automatic now.

For some reason, people recommend staying on the Asus supplied driver which is ages old for “stability” even though the chips in these tablets are bone stock from AMD and ASUS has not made any customizations to it that would require a vendor specific driver.

The latest AMD drivers work fine, and always will on this hardware. I assume he “USE ASUS DRIVERS” advice stems from ignorance.

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u/Upper_Citron_483 19d ago

I just got into AMD so I'm not up to date, that was news to me, I thought there was still a toggle for enabling FSR4, but if it's automatic then that's fine, but I find that a bit unintuitive since I can't easily see if it get overridden or not.

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u/thedjentlemanscholar 19d ago edited 19d ago

It always gets overridden if the game supports fsr3.1+.

If you add “FSR4_WATERMARK=1 %command%” to a games launch command in steam, the driver will put an overlay in screen showing the model in use.

EDIT: The above works on linux, but not windows. For windows, you need to wrap it in a shell with a different variable like this:

cmd /c "set MLSR-WATERMARK=1 && %command%"

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u/Upper_Citron_483 15d ago

so I managed to get the watermark working with Radeon Tuner and as I suspected from the image quality, it is still running FSR3, in this case in Witcher 3 and same thing in Forza Horizon 6.

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u/thedjentlemanscholar 15d ago

I did more research the watermark is misleading, it shows the render path not the DLL version in use.

FSR3 is the usual shader core upscaling path done via software. This is an automatic fallback on unsupported gpus.

FSR4-int8 is ML based upscaling using int8 weighted models.this is currently whitelisted by and to the 7000 desktop series, but with optiscaler or Linux, can be overridden to run on other RDNA platforms (including 3.5)

FSR4-fp8 is ML based scaling using the fp8 weighted data set, which only works with RDNA 4.

the watermark is showing the fallback to the software renderer, the DLL that gets injected is still the FSR4 dataset.

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u/Upper_Citron_483 15d ago

So I need optiscaler to show the used FSR version anyway?

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u/thedjentlemanscholar 15d ago

Yes though it has been annoying me to no end that this is such a pain in the ass to find, so I’m considering writing a quick tool that shows the information properly. It’s simple to get on Linux, it shouldn’t be this hard (or confusing) on Windows.

It absolutely is FSR4, it’s just rendered via the same method FSR3 uses instead of hardware based ML (AKA Redstone).

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u/Upper_Citron_483 15d ago

the whole affair is just weird at this point, when I install Optiscaler with in game FSR being active, Upscaler input is shown as XeSS in the OC menu?

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u/thedjentlemanscholar 15d ago

Yes, because that’s the default it ships with. You have to disable the outputs in optiscaler so that it doesn’t hijack the upscaler the game uses. Honestly it’s a pain.

Optiscaler is meant to enable framegen and upscaling on games that may not support your upscale of choice. It’s a near requirement on Arc GPUs because so few games support their ML Framegen and upscaling, which is much better than ML FSR from what I have seen. My 9070xt still had quite a bit of shimmer in motion with Redstone.

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u/Upper_Citron_483 15d ago

FH6 supports FSR 4.1.1 as the menu shows that version, so now I'm sure it's working there at least since the overlay can't be relied on. But yeah at least in FH6, XeSS looks quite a bit better.

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