DLSS 3.0 for RTX 40 Series

Hi - simple question for the devs, will ACC support the new DLSS 3.0

 

Looks like the 4090 is twice as fast than the 3090 according to benchmarks. https://babeltechreviews.com/rtx-4090-performance-45-games-vr-pro-apps-benchmarked/4/
VR would probably be up to normal flat screen standards visually while maintaining less than 11 ms frame times.

 

This would be a game changer for ACC VR, as only 1/8 pixels with DLSS3 need to be rendered, the rest is reconstructed. This would allow for very high settings and supersampling.

 

I was able to order an RTX 4090 this morning. Next week 13900K and Z790 motherboard will probably ship. Should take delivery of my 1200w ATX 3.0/PCIe 5 PSU by the end of the month, but Gen 5 SSD's are still non-existent. Already have the DDR5 memory, box (Corsair 5000D Airflow), fans, cooler, etc. No RGB for me I may buy a Gen 4 SSD to hold me over as the anticipation will be killing me with that new video card in my closet. Moving up from a 2080 so pretty psyched.

Sounds like a recipe for ghosting if you ask me. My goal is to turn DLSS off. No guessing of frames. Hoping my new system can give me lots of eye candy and maintain 90fps in each eye (HP Reverb G2).

 

There's no ghosting in DLSS3 based on games tested so far. Racing is an ideal use case for frame generation because of a temporally stable image, without fast twitch movements. You can see how well it works in Flight Simulator at lower frame rates than other games. The benefits you get from high resolution far outweigh any rendering artefacts you may see, so you absolutely need to use DLSS or TAA gen5 or regular upscaling to get the most out of Reverb in this game.

 

I saw a frame still from F1 ‘22 using DLSS 3 and it was a mess. Can’t find it, though. Surely one of the 7 reconstructed frames. I hope you’re right. My current setup requires not only DLSS but Motion Reprojection to make 45fps look like 90 and work for VR. My future box should be an entirely new and amazing experience in ACC

 

It's early days for DLSS3, there may be some artefacts if the game doesn't provide all motion vectors etc. but first impressions from reviewers are very positive. I'll test it myself today when 4090 arrives. DLSS frame generation would do effectively what motion reprojection does, but in much more advanced way with AI/machine learning, offering similar performance with less artefacts and better image clarity.

 

Found what I was looking for. This video goes into great detail. From the author of the video "You'll likely see issues with the presentation at any target frame rate below 100-120fps based on my experience with the technology so far." I'm going to have to pass on DLSS for ACC I think. We don't even know at this point if it will support 3.0. I'll have native frames at 100% resolution, please. I'll take what I can get. Which should be pretty sweet with my forthcoming RTX 4090.

 

It's not really feasible to run it natively on Reverb while making the most out of this headset. You can see significant improvements in sharpness and clarity going up to resolutions like 8000x4000. Whether you use DLSS3, reprojection, TAA upscaling, gen5, or plain DLSS2 it doesn't matter. Supersampling (vr pixel density in the game) is the biggest factor determining how well this game looks in VR.

 

I've just put 4090 to the test. Finally ACC looks and runs great in VR (Reverb G2) with little compromise. 100% steamvr resolution, 140% VR pixel density, DLSS performance, everything on high, full car LOD, with some tweaks to mirrors and number of opponents. No chance it would run and look as good without upscaling and reconstruction. It can't even handle epic, maxed out settings at this resolution, but it would with DLSS3.

 

Thanks for the feedback! For me 100% Pixel Density and if I have to do DLSS it won't be Performance. I'll sacrifice somewhere else. You're getting 90+ fps? Also, I assume you're on NVIDIA 522.25.

 

100% vr pixel density is a blurry mess compared to 140%, you might as well throw Reverb into the bin. DLSS performance looks good at this resolution, only ultra performance has noticeable drop in quality. You can run balanced at lower density but if you test it you will see that pixel density is more important. 90fps, gpu close to 90% with some headroom.

 

Looking forward to testing for myself. To each his own, right? It's going to be a few weeks for me. Waiting on parts for my build that aren't even released yet Oh, No ghosting? Maybe that was more a result of the motion reprojection. But, IIRC on my box DLSS seemed to be the primary culprit for the blur streaks of cars off in the distance.

 

Definitely test if for yourself, let me know if you find better settings. I'm attaching my config from today.

 

Hi mate this is great news and I have a 4090 arriving in next few days. Would it be possible if you could add all your settings in your reply so I can see what I can start with.

I have 12700k with a standard 2080 and these are my settings
I have not put the name of what setting it is but it's an order that you should be able to work out if you are familiar with graphics settings.

I do not use DLSS or FSR. I get 90fps during free practice and online I get 90fps after first few corners. Really looking forward to the jump from 2080 to 4090.

In steamvr i use 50% which is 2176x 2124

Res scale 55%
High
High
High
Disabled
High
Temporal
Disabled
Disabled
Disabled
Effects mid
Post processing low
Low
High
Mid
20m
Auto
Mid
20
120%

High
Enabled
Low
Mid
Low
70%
Enabled
Disabled
80% sharpness

Looking forward to your response.

Neil

 

I've included my config file, so you can see the settings inside, or you can drop it into \Documents\Assetto Corsa Competizione\Customs\VideoSettings and load in the game.

This is for Reverb with steamvr 100% (3172x3096)

 

Ok I see your settings now. Thanks for the quick reply.

 

@antych Do you notice any of the lag which could be a problem when running DLSS3 at low fps? Game runs for example at 90 but inputs are only affecting 45 fps which makes it feel sloppy. Can you test settings which would allow the card to drive the HMD's at 90 solid true frames without any DLSS trickery?
I use DLSS on the 3090 but will have to try without after watching that video about it.

 

There are no games with DLSS3 yet, but lag is unlikely to be an issue since ACC is playable with vr reprojection or temporal upscaling and feels fine. The regular DLSS doesn't introduce lag and there's no point disabling it, except that 3090 isn't powerful enough to run Reverb with pixel density >120% with DLSS and high settings during a race with dozen+ cars around. I was using 50% TAA/gen5 upscaling most of the time, which is less demanding than DLSS performance. That video isn't really relevant, it doesn't cover trade offs between vr supersampling and artefacts and it's about DLSS3 where you're using DLSS2 right now.

 

ACC finally has a crisp image in VR with Reverb G2!! Currently @ 3880x3788 and 70% resolution scale in game and 135-pixel density @ 90fps. Mid to high settings. *tears* lol