DSR in Assetto Corsa

[Roostaboosta]

DSR makes AC look Incredible
If anyone else out there running a single 1080p monitor that has an Nvidia card has not discovered DSR yet go into Nvidia control panel "Manage 3d settings", "Program settings" select AC (if it is not there click "add" and find the AC executable) and then under "Multi-display/mixed GPU acceleration" select "Single display performance mode". (make sure you click apply)
This allows higher resolutions to be selected and downsampled to your monitor's native resolution.
I run the game on a 1080p HDTV and select 3840 x 2160 resolution in-game and the improvement from 1080p is incredible. My FPS stays 45-80 with a full field using a GTX 970 overclocked. I have done this with my older racing games (NR2003, Race 07, GTR2...) and it brings those to a much improved visual experience for me.

Note: If the game looks too fuzzy for your taste go to "Global setting" under "Manage 3d settings" and lower the "DSR-smoothness" (I run mine @ 10%). Make sure 1.78x, 2.00x and 4.00x are selected under "DSR-factors" in case your rig can't handle 3840 x 2160 you can select 2715 x 1527 or 2560 x 1440 in-game.

I know most already knew about this but I just discovered it and thought I would share for those that didn't. My other rig with a GTX 770 4G has the same option so I assume it is there for all Nvidia cards. I have no idea if AMD cards have a similar option.

I have copied this from another forum, but give it a go, made a dramatic improvement on my rig.

 

[NLxAROSA]

Yup, DSR is the new AA. 👍 If your system can run the UHD resolution, it's definitely the way to go.

 

[mister dog]

@Roostaboosta thanks for the tip, you made me curious.
Would a GTX960 be able to handle this seeing you use an overclocked 970?

 

[Roostaboosta]

I have been trying 3840x2160 on a 1920x1080 screen, frame rate takes a big hit but achieving 70 to 90. Looks great but depending on track there is an occasional stutter, may try a drop to 3x in DSR factors. Dropped smoothness down fro 33% to 10%. Only gripe is the reduction in size of icons in race mode. But even having it set to 1920 x 1080 it looks better to my eyes? Not sure whether it should as it wouldn't be downscaling? Need a techie here. I use a 970 card and I7.

 

[Johnnypenso]

@Roostaboosta thanks for the tip, you made me curious.
Would a GTX960 be able to handle this seeing you use an overclocked 970?

Turn it on and try it. Watch your frame rates and so long as they don't go below the magic 60 if that's what your monitor is, you're good to go.

I have been trying 3840x2160 on a 1920x1080 screen, frame rate takes a big hit but achieving 70 to 90. Looks great but depending on track there is an occasional stutter, may try a drop to 3x in DSR factors. Dropped smoothness down fro 33% to 10%. Only gripe is the reduction in size of icons in race mode. But even having it set to 1920 x 1080 it looks better to my eyes? Not sure whether it should as it wouldn't be downscaling? Need a techie here. I use a 970 card and I7.

If you have a 1080 tv that's the most your tv will display. DSR upscales and then downscales for a theoretically better picture, but it's still just 1080p. What it really helps with is aliasing or the stepping you see in lines that are near horizontal. If you don't currently have an issue with this, as one might not on a smaller monitor with anti-aliasing maxed out, then DSR won't really help you.

As with anything else, try it, and if you like what it does and it doesn't drop your frame rates below your minimum target then keep it.

 

[Roostaboosta]

Well, there's an awful lot of people with 1080 screens saying it has made a massive improvement. So much so that some have put off purchasing higher res screens. Try it, then comment.

 

[Johnnypenso]

Well, there's an awful lot of people with 1080 screens saying it has made a massive improvement. So much so that some have put off purchasing higher res screens. Try it, then comment.

I have tried it, and that's what I recommended to everyone else. It helps to understand how it works and what it does and does not do. It also is not without a cost in FPS and as such may not be useful to those with less than a 970 card.

 

[NLxAROSA]

DSR upscales and then downscales for a theoretically better picture, but it's still just 1080p.

There's no upscaling in DSR, only downscaling. 👍 It actually renders in the selected resolution and then scales down. See also this page from nVidia.

 

[Roostaboosta]

Thanks, voice of reason! I can understand what I read then!

 

[Punknoodle]

The only downside of running triples...

 

[Andrescalvo]

@Roostaboosta thanks for the tip, you made me curious.
Would a GTX960 be able to handle this seeing you use an overclocked 970?

You can , reducing shadows and filters( shadows high, filter high). GTX 960 1450 MHZ BOOST.

 

[Johnnypenso]

There's no upscaling in DSR, only downscaling. 👍 It actually renders in the selected resolution and then scales down. See also this page from nVidia.

That's what I meant...poor choice of words..sorry.

 

[20832]

Just tried it and it stays on a reasonable frame rate for me (4690k @ 4.7GHz and 960 @ 1550MHz), my question would be if I can disable AA completely, or does that still create jagged edges?

 

[Johnnypenso]

Just tried it and it stays on a reasonable frame rate for me (4690k @ 4.7GHz and 960 @ 1550MHz), my question would be if I can disable AA completely, or does that still create jagged edges?

It only takes seconds to find out...just try it and let us know.

 

[NLxAROSA]

In Project CARS, you can disable AA with 4k DSR, haven't tried it with AC yet.

 

[20832]

It only takes seconds to find out...just try it and let us know.

Didn't notice any big increase in performance, so I just kept it on 2x and use it in UHD resolution.

 

[BrandonW77]

The only downside of running triples...

I take it this DSR method won't work on triples?

 

[Lewis_Hamilton_]

I take it this DSR method won't work on triples?

I don't believe Nvidia has released drivers to allow that yet, but may be you could give desktop GPU scaling a go? Same thing but everything on your computer is being 'downsampled' rather than just a game.

I use GPU scaling from 1440p to 1080p rather than using DSR in games because I like the extra real estate you gain with multiple windows open, plus everything displays more nicely on my 42" screen, at 1080p native everything is a bit too big. Most games also automatically add a 1440p option in their resolution menus too when you do this. so that you can jump between rendering 1080p or 1440p whenever you like.

 

[BrandonW77]

I don't believe Nvidia has released drivers to allow that yet, but may be you could give desktop GPU scaling a go? Same thing but everything on your computer is being 'downsampled' rather than just a game.

I use GPU scaling from 1440p to 1080p rather than using DSR in games because I like the extra real estate you gain with multiple windows open, plus everything displays more nicely on my 42" screen, at 1080p native everything is a bit too big. Most games also automatically add a 1440p option in their resolution menus too when you do this. so that you can jump between rendering 1080p or 1440p whenever you like.

Sounds interesting. How do I set that up?

 

[Lewis_Hamilton_]

Sounds interesting. How do I set that up?

It would be quicker for me to link to a video tutorial than to explain. Before you start this process, when in Nvidia Control Panel first click on "Adjust Desktop Size and Position", make sure that in the "Perform Scaling On" dropdown box is set to GPU and the tickbox "Overide the Scaling Mode of games and programs" is selected. The rest is in the video, it only takes a minute to test out. Oh, and where he mentions changing a dropbox from automatic to manual in custom resolution, ignore that and leave it at automatic, no need to change it.

 

[Johnnypenso]

@Lewis_Hamilton_ is a one stop shop for everything to do with pc's and racing sims. In his spare time he wins F1 Championships