DLSS 4

[LucShep]

3 hours ago, sleighzy said:

What DLSS level do you use in DCS, e.g. Quality, Balanced, etc.?

I noticed you have ForceDLAA enabled, this won't be taking effect as you also have DLSSQualityLevels enabled.

Instead of setting all the presets and then copying the DLSSTweaks config file beside the DCS executables you can just set the GlobalForcedPreset to the one you want, no need for copying config files over. Copying config files makes sense if overriding the quality ratios though for the one you use in DCS if you want to tweak it a little.

Also the DLSSTweaks dxgi.dll file needs to be renamed regardless, this doesn't work as a bunch of DCS patches ago, so needs to be named something like nvngx.dll (or other examples you mentioned, although I haven't tested those options). This is documented as a known issue in the DLSSTweaks GitHub repo.

Interesting point about the performance gain though. Been a few folk rolling back to the 566 (December) driver version given performance issues with the latest Nvidia drivers. I was a long time DLSSTweaks user (been using NVPI more recently for the preset change) so maybe I'll switch back to an older driver, and then use DLSS Swapper and DLSSTweaks to still gain the DLSS4 benefits.

I always use "Quality", even if "Balanced" now is digestible with presets J and K (I'm quite alergic to aliasing  *sigh*).

I do notice that in dllstweaks.log, and on the app, it mentions DLAA not being forced onto presets.
And only now I notice that I left that option by mistake earlier, guess was when testing the urban myth(?) that it applies an extra DLAA effect over DLSS presets regardless.
...may be a bug?  ...or perhaps old eyes going for placebo 
Will have to disable "Force DLAA", yep.

You're right about the Global Forced Preset.
The thing is, some games prefer a different preset (Cyberpunk2077 "C", WRCG "C", GoT "K", ACC I prefer "C", and DCS I prefer "K") so that isn't always a universal aproach.

And yes, I do rename the dxgi.dll regardless (to XInput9_1_0.dll, doesn't interfere w/ anything AFAIK) as I use Reshade, even in VR (VRToolkitReshadeUniversal, via SteamVR).
 

Edited April 9 by LucShep

[Qcumber]

I did a quick test comparing DLSS K using DLSSTweaks and NVPI

Resolution set to 4900x5000 in OXRTK

Quest pro with Meta cable link at 72Hz

smoothen_focus_view_edges=0.1
sharpen_focus_view=0.2
horizontal_focus_section=0.28
vertical_focus_section=0.28
peripheral_multiplier=0.28
focus_multiplier=1.0

All DCS settings were the same. 

Driver 572.82

This is a recorded track of an F-16 flying over Syria map (F-16 instant action free flight) for 1 minute.  

DLSS 3.10.2 quality (set using either DLSSTweaks (T1, blue) or NVPI (T2, purple) [I ran the one with NVPI before installing DLSSTweaks]. As you can see there is no difference with a 5080, although there were slightly fewer dropped frames using NVPI (0.2% vs 2.8%). 

Another test comparing preset K (T1, blue) with preset C (T3, green). Both are using DLSSTweaks. In this case, as expected, "C" has a shorter GPU latency than "K" (8.65 ms vs 10.04 ms) but was a noticeably softer image. I was unable to properly compare ghosting in this track. 

CPU latencies for the same runs. 

 

 

Edited April 9 by Qcumber

[diamond26]

5 hours ago, sleighzy said:

What DLSS level do you use in DCS, e.g. Quality, Balanced, etc.?

If I'm not totally mistaken, preset K overwrites any DCS DLSS option and forces Ultra Performance. At least this is what I get when I check the Quad Views log file. (I guess something similar happens with J) 

[Scotch75]

Works for me. It's the steps I posted on 28th Feb on page 11 of this thread.
Note that the steps re: DLSSTweaks and the debug overlay there are completely optional. It's just a way of verifying now (and in the future) if it's on the right version/preset.

Thanks sleighzy, found it. Wow, still a lot of faffing around. Running DLAA and DLSS Quality from the stock game gives me terrible ghosting, even on 1080P, TrackIR5, on an RTX3060. Do you think it would be worthwhile for me?
Cheers!


Sent from my SM-G998B using Tapatalk

[Qcumber]

1 hour ago, diamond26 said:

If I'm not totally mistaken, preset K overwrites any DCS DLSS option and forces Ultra Performance. At least this is what I get when I check the Quad Views log file. (I guess something similar happens with J) 

You can still change the scaling and you can see the difference between performance (0.5) and quality (0.66). You can also set bespoke scaling. I have tried up to 0.9 and this gives you great quality but with better performance than DLAA. 

[diamond26]

1 hour ago, Qcumber said:

You can still change the scaling and you can see the difference between performance (0.5) and quality (0.66). You can also set bespoke scaling. I have tried up to 0.9 and this gives you great quality but with better performance than DLAA. 

I guess you mean through Dlsstweak not in DCS setting.
 

[Qcumber]

15 minutes ago, diamond26 said:

I guess you mean through Dlsstweak not in DCS setting.
 

In DCS for the standard scaling. In DLSSTweaks or NVPI for the bespoke scaling. 

[Zligor]

4 hours ago, Qcumber said:

You can still change the scaling and you can see the difference between performance (0.5) and quality (0.66). You can also set bespoke scaling. I have tried up to 0.9 and this gives you great quality but with better performance than DLAA. 

Thank you for this

I just tried DLSS quality with 0.8 scaling and can confirm it looks allmost like DLAA alone but with more fps

[whitav8]

Qcumber,

   Could you possibly post your histogram scripts for excel/spreadsheet. I would like to do some similar testing on my rig. I suppose I could figure it out but...

Thanks in advance

 

Dave

[Qcumber]

4 hours ago, whitav8 said:

Qcumber,

   Could you possibly post your histogram scripts for excel/spreadsheet. I would like to do some similar testing on my rig. I suppose I could figure it out but...

Thanks in advance

 

Dave

I'll post my blank spreadsheet later then you can have a go. I'll also try to explain my workflow. Once you get used to it it's quite quick and easy. 

[sleighzy]

2 hours ago, Qcumber said:

I'll post my blank spreadsheet later then you can have a go. I'll also try to explain my workflow. Once you get used to it it's quite quick and easy. 

Rather than having it buried in this thread (not sure if you were going to drop it here) would you be able to either create a new post, or perhaps add to that other post you created a few days on performance which also had charts of this nature. 

[Qcumber]

10 hours ago, sleighzy said:

Rather than having it buried in this thread (not sure if you were going to drop it here) would you be able to either create a new post, or perhaps add to that other post you created a few days on performance which also had charts of this nature. 

Good point. I'll create a new post and then add the link here and in my other threads for consistency. 

 

 

Edited April 10 by Qcumber

[MHAce75]

is it expected that with swapping to DLAA 4 and choosing Preset J situation switches from CPU bound to GPU bound (by a great deal...)?... no super discernable performance degradation but neither huge visual improvements, but like to work with the latest stuff always. 

[dureiken]

8 hours ago, MHAce75 said:

is it expected that with swapping to DLAA 4 and choosing Preset J situation switches from CPU bound to GPU bound (by a great deal...)?... no super discernable performance degradation but neither huge visual improvements, but like to work with the latest stuff always. 

Do you mean from K to J or C to K ? thanks
 

[WipeUout]

From my experience, moving to DLSS 4 preset J or K from DLSS 3 increased GPU frametime but provides much better visual that could not be achived.  One significant improvement is in MFD screen (in the FA-18 at least).  It is always a trade-off and there is no magical gain of performance.  With the improved visual quality provided by DLSS 4, I was able to reduce my supersampling and thus bring back down GPU frametime with a net zero increase.

As far as CPU load difference, I have not seen much difference.

Edited May 9 by WipeUout
Typo

[Qcumber]

I just did a quick test comparing preset C to preset K. I used the methods in the link.

The results support what we have a all noticed. An increase in GPU latency. But there is also an increase in the CPU latency. Mean GPU increases from 9.5 to 12 ms. CPU increases from 6.5 to 8.8 ms. The FPS remains at a constant 72 FPS but there is lower variance in frame interval with C over K and a slightly smoother experience (92% vs 90%). All tests are done with DLSS quality and QFVR on Quest Pro. The same DCS settings in each run. PC specs are in the signature.  

Dark blue is "C". Light blue is "K"

Test flight is F-16 flying over Syria from the instant action mission. 

 

Edited May 10 by Qcumber

[MHAce75]

vor 12 Stunden schrieb dureiken:

Do you mean from K to J or C to K ? thanks
 

i meant from not using any preset (and staying on stock DLSS dll) to J or K... before doing any of this, I was CPU bound, now I am GPU bound by a great deal. I am not complaining, smoothness is still there, I was just wondering whether this is expected behavior

BTW, does anybody of you dabble with VR pre-rendered frames in NVIDIA settings (e.g. 1, or 2?) 

 

[Nahemoth]

Hi,

 I have been "out" for a while... and I see this DLSS4 discussion, which seems a bit confusing... using the latest NVIDIA driver, do we need to replace the DLL file in DCS or any other game? Or just change the settings in the NVIDIA inspector?

Thanks!

[Koziolek]

2 minutes ago, Nahemoth said:

Hi,

 I have been "out" for a while... and I see this DLSS4 discussion, which seems a bit confusing... using the latest NVIDIA driver, do we need to replace the DLL file in DCS or any other game? Or just change the settings in the NVIDIA inspector?

Thanks!

the latter

[C3PO]

Hi - got a bit lost in all the updates ... what's the simplest, definitive instruction set to get DLSS 4 working in DCS? I am not super technical....

[sleighzy]

1 hour ago, C3PO said:

Hi - got a bit lost in all the updates ... what's the simplest, definitive instruction set to get DLSS 4 working in DCS? I am not super technical....

https://forum.dcs.world/topic/368163-dlss-4/page/11/#findComment-5611147

[dsc106]

Any idea when ED will implement DLSS4 support natively into DCS so we can just select DLSS3 or DLSS4, the preset type, the scaling (Quality, Balanced, Performance, etc.) or "Custom"? Would love to have this natively with ease of use for everyone right in DCS core...