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FSR4 support in most games

FSR4 now works in Vulkan games

Marees said:

Optiscaler To The Rescue: Here’s How You Can Add AMD’s FSR 4 Upscaling To Any Vulkan Game​

Rayan Malik
Feb 28, 2026 at 01:00pm EST

Optiscaler Does What AMDon't​

This time, the Optiscaler team has cooked up something big. They've finally solved one of the biggest issues to-date with FSR 4: the Vulkan wall. You see, since its launch nearly a year ago, FSR 4 has remained off limits for Vulkan, due to some technical limitation or the other - frankly, I'm not sure anyone cares too much about the exact reason. What the community does care about is the fact that it's been nearly a year without any developments in this regard. No communications, no plans to finally bring FSR 4 to Vulkan games, nothing. This, as well as AMD's reluctance to officially release the INT8 version of FSR 4, has been one of the biggest pain points for users.

​

So how has the Optiscaler team managed to pull off the impossible? Technical details are currently scarce, but what's clear for now is that whatever fundamental technical limitation prevents FSR 4 from being added to Vulkan games hasn't been lifted. Optiscaler is simply adding a "compatibility path," so to speak.


Conclusion: All Hail Optiscaler​

Now, some of you might be wondering why all the fuss for FSR 4 on Vulkan, since hardly any new AAA games come out that are fixed to Vulkan. Certainly, Doom: The Dark Ages and Indiana Jones and The Great Circle are the only examples that come to mind when considering recent Vulkan-only AAA releases. And I agree with that to some extent: it's not a big issue in terms of the usability of FSR 4. What I take issue with is the fact that it's been nearly a year without any kind of communication or timeline from AMD to eventually sort this out. The fact of the matter is that users shouldn't have to mess around with a mod to get decent upscaling working on a game, especially when improved upscaling is one of the biggest sells of RDNA 4.

Well, I digress. The good news is that if you have the patience to mod it in, Optiscaler now enables you to play your favorite Vulkan-only titles with FSR 4. There is a performance hit, but not enough to invalidate the usefulness of this feature. In fact, I'd go so far as to say that Optiscaler is now a must for anyone wanting to play RDR2 on an RDNA 3 graphics card or newer. The image quality gains provided by FSR 4 in that game specifically are well worth the performance hit, and now that it works with Vulkan, there's almost no downside.


https://wccftech.com/how-to/how-to-add-amd-fsr-4-upscaling-to-any-vulkan-game-using-optiscaler/
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chameleoneel said:
A year wait for support on RDNA 2 is fuckin wild
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I also don't understand why. Like, it would seem to me that the most work would be training the model. Once you have that, I wouldn't think integration for cards would be a ton of work. I mean I know it isn't nothing, you want to make sure it works well, but like DF literally demonstrated that it works already... how is there a year of work left?

I mean I'm glad they are doing it and hell, I think they should bring it to nVidia and Intel cards too. That could be something to try and elevate FSR, which it had in the past: It runs on any platform. Like FSR3 wasn't the best looking compared to DLSS... BUT you could use it on any card. So if you wanted to support only one upscaler, that was a good choice.
 
chameleoneel said:
A year wait for support on RDNA 2 is fuckin wild
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Yeah the performance validation likely takes the lions share of the time involved and AMD is probably weary of hearing how bad FSR's first iterations looked compared to DLSS. The fact that they're even trying make it work is great news for many gamers especially considering AI's impacting on the industry as a whole. I know I'm happy to see official FSR 4 support for 7000 series since FSR 3 does look awful most of the time.
 
learners permit said:
Yeah the performance validation likely takes the lions share of the time involved and AMD is probably weary of hearing how bad FSR's first iterations looked compared to DLSS. The fact that they're even trying make it work is great news for many gamers especially considering AI's impacting on the industry as a whole. I know I'm happy to see official FSR 4 support for 7000 series since FSR 3 does look awful most of the time.
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They have already been working on this for some time. A whole extra year is dubious, IMO.

I suspect they may be hoping to push RDNA 2 users to upgrade.
 
There is I'm sure truth to that as all companies wanna move inventory but layoffs and focus shifting to AI has surely impacted their graphic divisions ability to deliver to such a small segment of their total revenue stream. I'm not making excuses for AMD. I'm merely looking at the big picture and trying to understand why they seemingly make some really poorly timed decisions.
 
I imagine the July release for RDNA3 cards is because they've only just started working on it again a week or so ago and that's the release estimate the software engineering team gave. The last time they touched it was probably the leaked int8 version a long time ago.

I get the feeling someone with half a brain finally managed to realise no one was going to trust them to support RDNA 5 if this is how they treated RDNA 3 and 2 customers, so sales were going to be horrible. Of course it also perfectly lines up with the release of the Steam Machine so maybe the person pointing that out was from Valve telling them and not someone internal to AMD, as the Radeon team never misses an opportunity to miss an opportunity.
 
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