DLSS 4

[Semaphore]

Totally baffled....

When DLS4 first landed i did the updates as described and put DLSSTweaks in to my 'bin-mt' folder and confirmed DLSS version 310.2.1.0 Profile J and the DCS performance jump was amazing.

The DCS updates and performance falls back by 50% going from solid 90 FPS in VR to 45, max 55FPS.

So i rechecked and updated the dll files again as before, ensured Nvidia Profile Inspector and the HUD display in game shows proper version and Profile and can confirm its all OK....

Can anyone explain why DCS is now not behaving and DFLSS 4 isnt giving same performamce boost as before...   running RTC 4090 with 14th Gen Intel i9 and 64Gb RAM. 

Thanks in advance  

[Qcumber]

1 hour ago, Semaphore said:

So i rechecked and updated the dll files again as before, ensured Nvidia Profile Inspector and the HUD display in game shows proper version and Profile and can confirm its all OK

If you use NVPI and the latest NVIDIA drivers it should automatically apply the latest version of DLSS. No need for DLSS tweaks anymore. 

Presets J and K come with a noticable impact on performance. I don't think anything has changed. I've certainly not noticed any difference in the last update. 

It might be worth clearing out your shader files and doing a slow repair. 

[Marshallman]

35 minutes ago, Qcumber said:

If you use NVPI and the latest NVIDIA drivers it should automatically apply the latest version of DLSS. No need for DLSS tweaks anymore. 

Presets J and K come with a noticable impact on performance. I don't think anything has changed. I've certainly not noticed any difference in the last update. 

It might be worth clearing out your shader files and doing a slow repair. 

Do you mean NVAPI? Im always looking for performance updates

regards

[Qcumber]

48 minutes ago, Marshallman said:

Do you mean NVAPI? Im always looking for performance updates

regards

NVIDIA profile inspector. The latest version allows to to select "always use latest" for DLSS. You only need to reset this after an NVIDIA driver update.

[Semaphore]

1 hour ago, Qcumber said:

If you use NVPI and the latest NVIDIA drivers it should automatically apply the latest version of DLSS. No need for DLSS tweaks anymore. 

Presets J and K come with a noticable impact on performance. I don't think anything has changed. I've certainly not noticed any difference in the last update. 

It might be worth clearing out your shader files and doing a slow repair. 

Ive just completed deleting DLSS Teaks and clearing out shaderr fdiles with a Slow Repair.  I have confirmed with NVPI that latest DLSS file is installed and Profile J....   absolutley nmo change... still 45FPS compared with before when getting 90FPS.

It beggars belief and is frustration to the point of throwing the whole goddam lot out the window LOL

[Qcumber]

37 minutes ago, Semaphore said:

Ive just completed deleting DLSS Teaks and clearing out shaderr fdiles with a Slow Repair.  I have confirmed with NVPI that latest DLSS file is installed and Profile J....   absolutley nmo change... still 45FPS compared with before when getting 90FPS.

It beggars belief and is frustration to the point of throwing the whole goddam lot out the window LOL

Have you disabled ASW?

What are your GPU frametimes? I would suggest using 72Hz refresh as this is less demanding. You get a smooth experience with up to 13.8ms. with 90Hz you need to maintain 11.1ms. 

I might be worth seeing what your performance is like without any Antialiasing to see if something else has changed on your system/settings that you are not aware of. 

[Semaphore]

1 hour ago, Qcumber said:

Have you disabled ASW?

What are your GPU frametimes? I would suggest using 72Hz refresh as this is less demanding. You get a smooth experience with up to 13.8ms. with 90Hz you need to maintain 11.1ms. 

I might be worth seeing what your performance is like without any Antialiasing to see if something else has changed on your system/settings that you are not aware of. 

Ohh completely lost me.. whats ASW?  Is trhis something top do with Oculus?  I have a Varjo Aero headset.

How do i change 72Hz refresh rates?

Edited March 31 by Semaphore

[Qcumber]

11 minutes ago, Semaphore said:

Ohh completely lost me.. whats ASW?  Is trhis something top do with Oculus?  I have a Varjo Aero headset.

How do i change 72Hz refresh rates?

Sorry. I thought you had a quest 3. ASW is the oculus reprojection. Do you have the Varjo equivalent of reprojection enabled? 

[Semaphore]

3 hours ago, Qcumber said:

Sorry. I thought you had a quest 3. ASW is the oculus reprojection. Do you have the Varjo equivalent of reprojection enabled? 

Not thta i am aware of.... 

Currently in the process of trying different profiles.. will report back as Profile E has improved quality and performance. Want to try the others and se what happens..

 

[Qcumber]

4 minutes ago, Semaphore said:

Not thta i am aware of.... 

Currently in the process of trying different profiles.. will report back as Profile E has improved quality and performance. Want to try the others and se what happens..

 

I think it is "motion smoothing" but I don't have any experience with Varjo. It's a process for dropping the frame rate by half and "adding" extra frames. 

[zildac]

13 hours ago, Semaphore said:

Not thta i am aware of.... 

Currently in the process of trying different profiles.. will report back as Profile E has improved quality and performance. Want to try the others and se what happens..

 

Ensure both of these settings are disabled and retest

 

null

[Semaphore]

2 hours ago, zildac said:

Ensure both of these settings are disabled and retest

 

null

Both are disabled.

[Obijavi]

En 31/3/2025 a las 11:32, Semaphore dijo:

Totalmente desconcertado....

Cuando DLS4 aterrizó por primera vez, hice las actualizaciones como se describe y puse DLSSTweaks en mi carpeta 'bin-mt' y confirmé la versión DLSS 310.2.1.0 Perfil J y el salto en el rendimiento de DCS fue sorprendente.

Las actualizaciones y el rendimiento del DCS caen un 50%, pasando de unos sólidos 90 FPS en VR a 45, con un máximo de 55 FPS.

Entonces volví a verificar y actualizar los archivos dll como antes, me aseguré de que Nvidia Profile Inspector y la pantalla HUD en el juego muestren la versión y el perfil correctos y puedo confirmar que todo está bien.

¿Alguien puede explicar por qué DCS ahora no se comporta bien y DFLSS 4 no brinda el mismo aumento de rendimiento que antes... ejecutando RTC 4090 con Intel i9 de 14.a generación y 64 Gb de RAM? 

gracias de antemano  

Exactly the same thing happens to me...

[RoboHackfeld]

Well just to clarify, I dont need DLSS Swapper anymore?

I just need the latest Nvidia Driver, the NVPI and select Preset K under DLSS - Forced Preset Letter? And I have to do this before I start the game right? Can not change it on the fly?

No DLL change in DCS directory necessary? 

Ingame I choose DLSS - Quality. No DLAA

Is there any message or something so I can be sure DLSS 4 is running correctly? - okay I found this DLSSTweaks Overlay  

aaand last but not least: NVPI has to be set to the right profile with the right exe (DCS. MT) and it has to be running when I launch DCS?

Edited April 8 by RoboHackfeld

[Scotch75]

FFS, could this be made easier please? I don't know where to start, except I have downloaded the latest dlss dll from techpowerup and replaced the ED one in
/mt-bin/
Cheers!


Sent from my SM-G998B using Tapatalk

[RoboHackfeld]

We`ll i've done it like written above and it worked. I see the difference in visuals but performance is worse than MSAA 4x. I did not expect that. 

 

null

Edited April 8 by RoboHackfeld

[MAXsenna]

FFS, could this be made easier please? I don't know where to start, except I have downloaded the latest dlss dll from techpowerup and replaced the ED one in
/mt-bin/
Cheers!


Sent from my SM-G998B using Tapatalk

Just a little tip. There is no single threaded version of DCS anymore, so you can safely stop using \mt-bin\, because the files in \bin\ are identical, and down the line \Mt-bin\ will be removed.

Sent from my SM-A536B using Tapatalk

[sleighzy]

11 hours ago, Scotch75 said:

FFS, could this be made easier please? I don't know where to start, except I have downloaded the latest dlss dll from techpowerup and replaced the ED one in
/mt-bin/
Cheers!


Sent from my SM-G998B using Tapatalk
 

No need for dll swapping. 
 

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

[WipeUout]

14 hours ago, RoboHackfeld said:

Ingame I choose DLSS - Quality. No DLAA

You can choose DLSS and DLAA, they work better together.  You can push DLSS to performance also, it will look good with added performance.

Keep in mind that the improved visual quality using preset K vs preset E comes with a cost, for me I am increasing GPU frametime by about 19% in my test track file.  But there is no comparison between preset E and K, the image is way better with far less fuziness no werd MFD image.  Even by supersampling with preset E, I can't achieve the same level of clarity using preset K.  Of course, result varies depending on hardware...

[Scotch75]

No need for dll swapping. 
 
https://forum.dcs.world/topic/368163-dlss-4/page/11/#findComment-5611147

Hey sleighzy,

That link did not work for me. It said the page does not exist.

Cheers!


Sent from my SM-G998B using Tapatalk

[sleighzy]

2 hours ago, Scotch75 said:

Hey sleighzy,

That link did not work for me. It said the page does not exist.

Cheers!


Sent from my SM-G998B using Tapatalk
 

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.

[LucShep]

YMMV but, I'm getting better performance and image quality results just with DLSS Tweaks alone. 

No messing with DLSS settings in Nvidia Inspector (or equivalent NVPI Revamped), whatsoever - all those DLSS settings best left as driver default for best results.

PS: if you're the impatient short attention span type, go to the end of this post *

I get worse results if with DLSS settings messed on Nvidia Inspector.  Slightly bigger hit in GPU usage and higher wattage consumption (so, worse impact) on my RTX3090 and, although subtle, image quality does not look as good. 

DLSS Tweaks with adjusted settings seem to be devoided of issues, and brings the desired results for me.

I'm also using the latest Nvidia DLSS .dll files alone, which also means then that I don't have to download latest Nvidia garbage drivers either (can use whichever older ones I like).

What I do is:

1. Download the latest DLSS .dll files from TechPowerUp and unzip (or copy) the files in the folder where the game's executable is.

2. Download the most recent DLSS Tweaks application and unzip (or copy) the files into an empty folder.

3. Run the "EnableNvidiaSigOverride.reg" file (double-click -> Run -> Yes to all prompts)

4. Double click on the DLSSTweaksConfig.exe file and change any settings to suit your preferences. And then press "Save" after changing settings.
   
   Personally, I changed mine to exactly as they are in this image :
   (click image to enlarge it)
   

5. copy and place all the files into the folder where the game's executable is.
   side note and optional step - in case you use Reshade or any other app that needs to have its own exhisting dxgi.dll
   rename the dxgi.dll that comes with DLSS Tweaks to either XInput1_3.dll, or XInput1_4.dll, or XInput9_1_0.dll.

6. Run the game and see how it goes.

____  ____  _____

* Now, let's imagine that you're the impatient type, and want the least fuss as possible.... 
Then you'd download THIS (includes all mentioned files, with tweaked settings, and compatible with Reshade), then unzip or copy all files into folder where game executable is.
Now you'd only need to double click the EnableNvidiaSigOverride.reg (run and yes, etc), adjust settings in the app if you wish (though not needed)... and it's ready to go.
Run the game, see how it goes (again, YMMV - may or not work better for you). 

BTW, personal opinion but I still think presets "C" and "E" are the best alternatives to preset "K" or "J".

 

Edited April 22 by LucShep
correction in tweaks (ForceDLAA now ticked to False)

[Qcumber]

2 hours ago, LucShep said:

YMMV but, I'm getting a lot(!!) better performance and image quality results just with DLSS Tweaks alone. 

No messing with DLSS settings in Nvidia Inspector (or equivalent NVPI Revamped), whatsoever - all those DLSS settings best left as driver default for best results.

PS: if you're the impatient short attention span type, go to the end of this post.

I get far worse results if with DLSS settings messed on Nvidia Inspector.  At least a +20% bigger hit in GPU usage and equivalent higher wattage consumption difference (so, a considerably worse impact) on my RTX3090, and image quality does not look as good. 

DLSS Tweaks with adjusted settings solves all issues, and brings the desired results for me.

I'm also using the latest Nvidia DLSS .dll files alone, which also means then that I don't have to download latest Nvidia garbage drivers either (can use whichever older ones I like).

What I do is:

1. Download the latest DLSS .dll files from TechPowerUp and unzip (or copy) the files in the folder where the game's executable is.

2. Download the most recent DLSS Tweaks application and unzip (or copy) the files into an empty folder.

3. Run the "EnableNvidiaSigOverride.reg" file (double-click -> Run -> Yes to all prompts)

4. Double click on the DLSSTweaksConfig.exe file and change settings to suit your preferences. And then press "Save" after changing settings.
   
   Personally, I changed mine to exactly as they are here in this image :
   (click image to enlarge it)
   

5. copy and place all the files into the folder where the game's executable is.
   side note and optional step - in case you use Reshade or any other app that needs to have its own exhisting dxgi.dll
   rename the dxgi.dll that comes with DLSS Tweaks to either XInput1_3.dll, or XInput1_4.dll, or XInput9_1_0.dll.

6. Run the game and see how it goes.

____  ____  _____

Now, let's imagine that you're the impatient type, and want the least fuss as possible.... 
Then you'd download THIS (includes all mentioned files, with tweaked settings, and compatible with Reshade), and unzip or copy all the files into the folder where the game executable is. Now you'd only need to double click the EnableNvidiaSigOverride.reg (run and yes, etc), and it's ready to go.
Run the game, see how it goes (again, YMMV - may or not work better for you). 

BTW, personal opinion but I still think preset "C" is the best alternative to preset "K" or "J".
 

Thanks for the heads-up. I might give it a go and see if it makes a difference for me. What does ghosting look like for you with these settings? 

[LucShep]

1 hour ago, Qcumber said:

Thanks for the heads-up. I might give it a go and see if it makes a difference for me. What does ghosting look like for you with these settings? 

The newer presets J and K both have that soft image with less aliasing than any other preset (very nice there, though sometimes too soft), but the ghosting still present for me.
The older presets C and E have least ghosting for me.
 

Edited April 9 by LucShep

[sleighzy]

4 hours ago, LucShep said:

YMMV but, I'm getting a lot(!!) better performance and image quality results just with DLSS Tweaks alone. 

No messing with DLSS settings in Nvidia Inspector (or equivalent NVPI Revamped), whatsoever - all those DLSS settings best left as driver default for best results.

PS: if you're the impatient short attention span type, go to the end of this post.

I get far worse results if with DLSS settings messed on Nvidia Inspector.  At least a +20% bigger hit in GPU usage and equivalent higher wattage consumption difference (so, a considerably worse impact) on my RTX3090, and image quality does not look as good. 

DLSS Tweaks with adjusted settings solves all issues, and brings the desired results for me.

I'm also using the latest Nvidia DLSS .dll files alone, which also means then that I don't have to download latest Nvidia garbage drivers either (can use whichever older ones I like).

What I do is:

1. Download the latest DLSS .dll files from TechPowerUp and unzip (or copy) the files in the folder where the game's executable is.

2. Download the most recent DLSS Tweaks application and unzip (or copy) the files into an empty folder.

3. Run the "EnableNvidiaSigOverride.reg" file (double-click -> Run -> Yes to all prompts)

4. Double click on the DLSSTweaksConfig.exe file and change settings to suit your preferences. And then press "Save" after changing settings.
   
   Personally, I changed mine to exactly as they are here in this image :
   (click image to enlarge it)
   

5. copy and place all the files into the folder where the game's executable is.
   side note and optional step - in case you use Reshade or any other app that needs to have its own exhisting dxgi.dll
   rename the dxgi.dll that comes with DLSS Tweaks to either XInput1_3.dll, or XInput1_4.dll, or XInput9_1_0.dll.

6. Run the game and see how it goes.

____  ____  _____

Now, let's imagine that you're the impatient type, and want the least fuss as possible.... 
Then you'd download THIS (includes all mentioned files, with tweaked settings, and compatible with Reshade), and unzip or copy all the files into the folder where the game executable is. Now you'd only need to double click the EnableNvidiaSigOverride.reg (run and yes, etc), and it's ready to go.
Run the game, see how it goes (again, YMMV - may or not work better for you). 

BTW, personal opinion but I still think preset "C" is the best alternative to preset "K" or "J".
 

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.

Edited April 9 by sleighzy