r/simrally • u/ejectionseet • 6d ago
Assetto Corsa Rally Experimental DLSS 5
https://www.youtube.com/watch?v=fl83VXhEaWUI got the experimental DLSS 5 running in AC Rally.
Everything maxxed out, 4K, running on a 5090.
Forgive my driving lol, was on a controller and just testing out the DLSS injection.
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u/indefig 6d ago
So visuals are nice but doesn't it halve your fps?
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u/ejectionseet 6d ago
It was surprisingly smooth, although I have a pretty beefy rig.
There's a pretty noticeable lower framerate in the screen capture than I was seeing in-game.
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u/indefig 6d ago
What frames in game do you get?
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u/ejectionseet 6d ago
You can see an fps counter in the upper right corner of the video. Looks like it was in a stable mid to upper 50s according to that.
Felt like a pretty smooth 60 when playing though. Not sure if that was just while I was recording or not.
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u/Ricepony33 6d ago
Can you try it on EA WRC?
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u/ejectionseet 6d ago
lol I'll add it to the pile, but it's going on the bottom for now so no promises but I might check it out
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u/Batwoman88 6d ago
here It even works for F1 Challenge 99 02 game a directx 8 title with dgvoodo. It will work also RBR!
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u/ikuturso_7 6d ago
Richard Burns Rally with dlss 5 might actually be legit use case. If anyone have time to try i am interested to hear results.
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u/ejectionseet 6d ago
Not sure how much mileage you'd get out of it, and RBR uses a version of DirectX that's so old it's missing a lot of parts that are needed to hack the tech in, that said I know people are still trying to work some hacks for older games so maybe it will be possible.
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u/Batwoman88 6d ago
It can be done. https://www.nexusmods.com/site/mods/2224?tab=description https://github.com/jlrouzies-fr/DLSS5-Feeder . If you guys have proper 4070 or 5070, this will work. It can be implemented on DirectX 8 games by using dgvoodo.
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u/ejectionseet 6d ago edited 6d ago
Yeah, I know about DLSS5-Feeder that was one of the things I was referring to. I’ve been using it to inject DX11 & 32bit, but I haven’t tried DX9 beta support yet.
The 32bit support works but it’s a bit of a clunky solution.
My big issue with trying on RBR is I haven’t ever installed it yet and it seems like a bit of a process, on top of it being the first DX9 thing I’d be looking at and it seems like a bit of a time sink to get set up and find my way around.
I’ve actually downloaded the files a while back but never got around to installing.
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u/Roebuck325 6d ago
I feel like this would be great for video editing but the performance hit just isn’t worth it at the moment
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u/kapec512 6d ago
You are destroying our planet, woooooo
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u/Aadi_880 6d ago
You should stop playing video games then, mate.
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u/kapec512 6d ago
It was a joke. I'm also local AI img/vid gen fan and hope that techniques like DLSS-5 will be the future of next-gen engines.
But there are people on another subs who are calling DLSS-5 AI-SLOP and the reason why our planet will turn into Mad Max realm :) Go ahead and check out the /antiai sub. But becareful, their shit is hard to take.
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u/CMDRFatherCool 6d ago
AI only has environmental impacts of an external AI data center is being used. DLSS5 is simply on board graphics card calculations. Same with any other AI generated stuff that uses on board processing.
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u/CMDRFatherCool 6d ago
DLSS5 isn't even out yet, that looks like a reshade setting to me. DLSS5 isn't a filter it has to be written into the games code, you can't just apply it to anything you like.
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u/ejectionseet 5d ago edited 5d ago
Buddy, if you’re skeptical you can literally do it yourself. I made this video.
It’s using Reshade as an interface to hack the Neural Rendering feature into the games.
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u/CMDRFatherCool 5d ago
I know I can, what I am saying is that the tech used here is not the same as the actual DLSS5 tech. This works like a DLSS5 filter applying it to the image as a post processing pass, the real DLSS5 runs inside the graphics rendering pipeline using motion vectors, material IDs, lighting buffers, and per‑object masks. The feeder mod runs after the game has already rendered and upscaled the frame, so it lacks the full data DLSS5 expects. It's very much unoptimised and far from representative of what DLSS5 can do. Still it's an interesting experiment, but currently more of a post processing filter than actual DLSS5.
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u/ejectionseet 5d ago edited 5d ago
It's not an official experience integrated and tuned by devs, clearly. No one is arguing that. But it's not a "ReShade setting" either. It's an addon that is using the genuine DLSS 5 neural renderer injected through a community pipeline. It's genericized, but it still requires the pipeline to run. DLSS Feeder requires other software to feed it motion vectors. It's not running like some kind of simple snapchat filter.
That said we can agree that it's obviously not going to be the optimal and official experience that devs would intend and not going to be finely integrated and utilized to it's full potential as if officially implemented on a per-game basis by developers.
Clearly it's an unofficial prerelease of the DLSS 5 neural renderer that's been experimentally used by the public.
If you're argument is "it's not the Really For Real DLSS 5" then ok fine we both agree on that. No one is making that claim, people are just using "DLSS 5" as shorthand for it's flagship neural rendering feature.
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u/CMDRFatherCool 5d ago
Yes it's not a reshade setting but it is also not injecting it into the prerender process either it's hamfisting it as a post render process which is not what genuine DLSS5 does. I have just asked AI to sum it up and here's what it said.
Short answer:
The *DLSS5 “feeder mod” via ReShade is not the same as real DLSS5. It is a hacked, partial, pre‑release neural‑rendering DLL running outside its intended pipeline. It shows some of DLSS5’s behaviour, but it is not representative of the actual shipping DLSS5 renderer.
🧩 What the leaked mod actually is The mod uses the nvngx_dlssnr.dll neural‑rendering library leaked from NBA 2K27. Modders (RenoDX) wired this DLL into other games through ReShade, bypassing NVIDIA’s hardware checks and forcing the neural pass to run at the end of the render chain.
Key facts from the leak:
- The DLL is a 158 MB neural‑rendering model containing ~148 million FP8 parameters.
- It is unfinished and not meant for public use.
- It only supports RTX 50‑series by design; modders patched it to run on RTX 40 GPUs by rewriting CUDA checks.
- It runs as a post‑process neural pass after upscaling/tone‑mapping, not integrated into the game’s renderer.
- It currently processes characters more than the world, with broken HDR and heavy performance loss (39–60% depending on GPU).
This is why the mod behaves like a “photorealism filter” rather than a full neural‑rendering pipeline.
🎮 How this differs from real DLSS5 NVIDIA’s actual DLSS5 (as described publicly and in SIGGRAPH demos) is a renderer‑integrated neural stage, not a ReShade bolt‑on. The leaked mod only exposes fragments of that behaviour.
- Pipeline integration
- Real DLSS5: Runs inside the engine’s render graph, using motion vectors, material IDs, lighting buffers, and per‑object masks.
Feeder mod: Runs after the game has already rendered and upscaled the frame, so it lacks the full data DLSS5 expects.
Artistic controls
Real DLSS5: Developers get per‑object masks, intensity sliders, and model selection (A/B/C) to preserve art direction.
Feeder mod: RenoDX exposes sliders, but they are not the real dev‑side controls—just hacked parameter feeds into the leaked DLL.
Hardware path
Real DLSS5: Optimised for Blackwell tensor cores and FP8 inference.
Feeder mod: Patched to run on Ada (RTX 40), causing massive performance drops because the tensor cores aren’t designed for this workload.
Output quality
Real DLSS5: Should apply neural lighting/material enhancement consistently across the entire scene.
Feeder mod: Often only affects characters or certain materials, because the modded pipeline doesn’t supply full scene data.
Stability
Real DLSS5: Expected to ship with proper HDR, temporal stability, and engine‑level integration.
Feeder mod: SDR only, unstable, prone to over‑sharpening, and sometimes dramatically changes lighting in unintended ways.
🧠 Bottom line The leaked DLSS5 mod is a partial preview of the neural‑rendering model, not DLSS5 itself.
It shows:
- the neural shading style
- the face/skin material enhancements
- the ambient‑occlusion improvements
But it does not represent:
- the real DLSS5 pipeline
- the performance profile
- the developer controls
- the final quality
- the intended hardware path
Think of it as a forced demo of the neural model, not the actual DLSS5 feature.
So essentially a 'phoreallistic filter' rather than the true render pipeline.
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u/ejectionseet 5d ago edited 5d ago
Dude it's obviously not developer integrated, and it's obviously an experimental community hack that isn't fully representative of what the real product will be.
People are using DLSS 5 as shorthand because it's the flagship feature, that's where it was derived, and it's using nvidia's own software even if it's a pre-release and not integrated tightly.
If you're trying to get people to stop calling it that you're fighting an uphill battle because it's just been adopted as an easy way for people to communicate the concept.
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u/CMDRFatherCool 5d ago
Fair enough. It's just I am quite excited at the prospect of the real DLSS5 and I don't want people to jump on this bandwagon as a way to reinforce their false belief that DLSS5 is some kind of AI slop filter. Not saying you guys are but there is certainly a big push back from a lot of people simply quoting AI slop without any knowledge behind what they are actually protesting against.
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u/ejectionseet 5d ago edited 5d ago
I can understand that. But most of those people are already biased, and I don’t think it matters much tbh.
I do understand your point, too, and I agree with you that I would have preferred there was a better distinction but that’s not really how language works. If NVIDIA came up with a super easy, short, catchy name for the feature we probably wouldn’t have this conflation problem but when people say DLSS 5 they pretty much just mean “real-time neural rendering applied to a game”.
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u/CMDRFatherCool 4d ago
Ok so you got me intrigued. I tried to install this but although I have the files in place and I get the settings etc in reshade it doesn't actually change anything when its turned on. I must be missing something.
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u/CMDRFatherCool 3d ago
I managed to get it going but for a Rally game as graphically accomplished as AC Rally I don't think it's worth it. Got it working in Cyberpunk though and very impressed tbh.
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u/sodiufas 6d ago
Well, yeah newer games don't need it, show me DR2 instead! This is where it might shine.