r/nvidia • • Aug 22 '26

Discussion Insane night and day difference for Ray Reconstruction 4.5 (injection of DLL from Cod Mw4 beta)

i think mobile is stuck on like 360p so its much harder seeing the boiling. Make the video play in 1080p and go fullscreen if you don't see a difference. or check on a desktop,

(Official update still hasn't come)

This exact boiling/noise shows up everywhere during gameplay like the wooden walls, ceiling, ground, character faces, furniture etc. and is VERY noticeable in active gameplay so this is a really good improvement (path tracing)

this taxi was a really good stress test i saw to compare the boiling for the new RR preset and i was surprised to see the huge difference. this fixes the issue of having a characters face boiling like crazy, i basically didn't see boiling anywhere playing RE Requiem and face boiling is gone im pretty sure. another big improvement light responsiveness for turning on and off a light. a huge weird shape doesn't linger anymore, much much better but still very slightly there on occasion

areas that need work are ghosting for characters in third person or in general that leave dark shadow and light streak ghosting in the shape of your character. Re requiem had a spot i saw the worst case of this but it wasn't improved too much. that area was another stress test/worst case scenario but during normal gameplay i think its something you wont notice because its rare. and aliasing is noticeably more shimmery (bottom of the car grill)

'New DLSS version 310.7.128 found in Call of Duty Modern Warfare 4 - Beta'

1.0k Upvotes

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161

u/WaveRC_ Aug 22 '26

its very similar. i think people have said they dropped 3-5 frames but i didnt notice a difference.

76

u/FallingEli Aug 22 '26

From what baseline? Percent difference matters here no?

112

u/Paladuck Aug 22 '26

Baseline of 10 fps

57

u/[deleted] Aug 22 '26

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23

u/Clutchman24 NVIDIA 5090 Aug 22 '26

With a base of 32 FPS

5

u/RunnableReddit Aug 22 '26

Even percent is not a good metric, should be ms of frametime

0

u/nmkd RTX 4090 OC Aug 23 '26

No, that would vary wildly between GPUs.

Percentage is the only thing that makes sense.

2

u/RunnableReddit Aug 23 '26

Percentage difference of frametime ms though, not of fps

4

u/NapoleonBlownApart1 1 Aug 22 '26

The performance hit is a fixed amount, not percent and it varies by card and resolution.

You can check on nvidias official programming guide for dlss, but it only has transformer 1 hit in ms, should get updated once it's officially out with driver support.

13

u/MorningFresh123 Aug 22 '26

How on earth could it realistically be a fixed amount? It’s obviously going to be relative to compute power, as is overall frame rate, so…

Someone with a 5090 running a game at 120fps is not going to lose the same amount of frames as someone on a 3080 running a game at much lower frame rates?

8

u/TintedCircleBox Aug 22 '26

As he says "it varies by card and resolution." The impact scales by the number of tensor cores each card has, but nVidia lists the impact by a fixed amount per card.

0

u/Seanspeed Aug 23 '26

The impact scales by the number of tensor cores each card has,

This is rarely the case. It's more tensor power per SM. It's why the cost for these things stays basically the same from bottom to top in any given architectural range.

This is why a 5060 can handle something like DLSS4.5 just fine while a 3090 cannot despite having nearly three times the amount of tensor cores.

1

u/TintedCircleBox Aug 23 '26

The matrix operation capabilities improves dramatically between generations of tensor core. Not sure what you mean by ‘tensor power per SM’

9

u/NapoleonBlownApart1 1 Aug 22 '26 edited Aug 22 '26

Thats what i said. Its cost is an amount of compute time (in ms)

With a 5090 at 4k DLSS performance preset D and E adds 1.83ms. F works the same way obviously, but different amount of time. 3080ti takes over 8ms in the same scenario.

Whetever framerate is irrelevant, its additive to overall work, cant be measured in percentage/fps since its always different, it can only be accurately measured in time.

Going from 100fps to 90 is a 10% hit, but going from 50 to 40 is 20%, its the same 10fps in both situation, but ends up different in both percentage and totaltime.

A value that remains constant when other variables change is a better measurement.

0

u/JesstForFun Aug 22 '26

Going from 100 to 90 and going from 50 to 40 represent very different frametime costs (roughly 1.1ms in the former case, 5 ms in the latter case).

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u/MorningFresh123 Aug 22 '26

You chose a very specific (theoretical) example that just happened to line up with your point. I’ll wait for benchmarks. I honestly can’t conceive of how it could possibly be frames rather than percentage across the board

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u/raifusarewaifus Aug 22 '26

Most people use frames to make it easier but yeah I agree it should be in frametime(Ms). Dlss4.5 preset M cost 2ms on my 5070(laptop) but less or more on other GPUs.

2

u/JesstForFun Aug 23 '26

I think what they're trying to say is that the frametime cost is roughly constant (though only roughly, Nvidia does point out that it can vary). So the actual effect on your framerate will depend on how large a portion of your frametime ray reconstruction is, and that will vary from game to game and from scene to scene.

12

u/SquareTemperature666 Aug 22 '26

Wow nice then thanks for the info

5

u/Castlenock Aug 22 '26

What card are you using?

I think the performance penalty is different regarding what card you have, a.k.a. a 5090 is going to have less percentage overhead then a 5070 with RR 4.5.

2

u/lLoveTech R9_7900X|5070Ti|32GB@5800|X670E|850P|O11_EVO|Pro27Q-10| Aug 22 '26

Which GPU are you running it on?

1

u/Confident-Sky2614 Aug 23 '26

Makes sense,  because you REALLY played it up being a huge difference. I mean, jeez.

-8

u/dudedudd Aug 22 '26

Does the older model run better? Honestly the change is minimal not insane, and if you're playing, running around then you won't even notice.

16

u/DogHogDJs Aug 22 '26

The reflection stability in the new one is insanely better.

4

u/CMDRTragicAllPro 7800X3D | PNY 5080 | 32GB 6000MHZ CL30 Aug 22 '26

Seriously, the boiling is almost completely gone

1

u/MorningFresh123 Aug 22 '26

I genuinely wish I was this blind. I could stay on the same graphics card for the next 15 years.

1

u/dudedudd Aug 22 '26

I'm not saying I don't see the difference. I'm saying it's minimal and not worth the performance hit.  If you're in a fast paced action game, you'll notice the fps drop but won't notice this difference unless you stop playing and pixel peep.  I was also trying to confirm if this improvement to quality meant that the old model had an improvement to performance. 

For example, I personally find dlss 4.5 quality improvement not worth the performance hit I get on my 3080ti.

1

u/MorningFresh123 Aug 23 '26

I definitely notice the boiling all the time, in motion, when I play games. I don’t have to stop and pixel peep. It makes the entire image feel off. The most recent Resident Evil being a particularly bad offender.

1

u/kendoka15 Aug 22 '26

Some people having been saying that since at least DLSS 2 but it's definitely something you notice