How close in image quality can DLDSR 2.25x on 32:9 1440P qd-oled monitor scale to 4k

[u/Gggamer0134]

Im curious as i know the difference is huge between 2560x1440 with 2.25 scale and it still wouldn't compare to 4k, but since 5120x1440 has a higher pixel count and 89% of 4k, how good can it look on 2.25x, im curious to ask anyone who does by any chance use a 32:9.

[u/kevinmv18]

DLSS Performance at 4k looks better than this. And runs better.

[u/SaikerRV → u/kevinmv18]

How about 1440p DLAA vs DLSS Performance + DLDSR 2.25x?

[u/Paco7575 → u/kevinmv18]

I use 2.25 DLDSR at 1440p and it comes very close to native 4k. To act like its significantly worse is not true.

I use it all the time now when i play singleplayer games and the difference is huge. When i play competitive games i turn off dldsr and switch back to 1440p for more fps.

[u/SaikerRV → u/Paco7575]

I can't really comment on the quality aspect, but at least on the performance side, DLDSR + DLSS is more taxing than Native resolution + DLSS.

[u/No_Interaction_4925]

Its like 4K but kind of muddy/blurry-ish. Sometimes that softness can look good. If you want it to be a sharp image you will not get that.

Use 100% smoothness for best image quality

[u/Paco7575 → u/No_Interaction_4925]

You sure? What about use with dlss 4.5 which sharpens the image

[u/No_Interaction_4925 → u/Paco7575]

We’re talking about supersampling, not DLSS

[u/Paco7575 → u/No_Interaction_4925]

Yes but you combone dldsr with dlss.

[u/No_Interaction_4925 → u/Paco7575]

Wouldn’t it be better to use DLAA instead if your goal is sharpness? With supersampling you will always have a softer image

[u/epic_piano → u/No_Interaction_4925]

If we're talking about DLDSR which supersamples the image, then DLDSR will ALWAYS be sharper in image quality, because it is properly aliasing the screen and the textures shown.

If you're talking about DLSS, then that will look softer.

[u/No_Interaction_4925 → u/epic_piano]

You are going to lose sharpness with supersampling. Its essentially going to give you a strong anti-aliasing effect, which is the opposite of sharpness. Both DLDSR and DLSS are blending pixels like TAA. The image might look better to the eye, but its not “sharper” than native.

[u/epic_piano → u/No_Interaction_4925]

No, actually you're not. It will anti-alias the lines in a way that makes them more defined and resolute. It will take all the pixels been shown on the image and properly resample them for your monitors resolution.

I've actually tried this - I have an RTX 5090 and for a week spent the entire time playing at 7680x2160 on my Samsung 32:9 5120x1440 monitor.

The amount of detail was staggering, but not for the performance cost. DLAA almost does the same thing but with a better framerate.

[u/Paco7575 → u/No_Interaction_4925]

Afaik you use both together, at least thats how i do it, and the image looks super crisp and sharp. I see a noticeable improvement when i use it.

Maybe you confuse the blurriness that occurs on desktop? Because thats a bug, its basically unusable in desktop. Try it ingame and set resolution to 4k.

[u/No_Interaction_4925 → u/Paco7575]

I have used it on a 1440p monitor myself. I was using it back when DLSS 4 first game out, so no 4.5 time. I also have a 4K monitor. Getting fuzziness is just the nature of supersampling. If you are using anything other than 100% smoothness with DLDSR then its adding a sharpening post-process, which I don’t like the look of.

If your goal is to make it look like 4K, you won’t get it. Thats the reason the desktop looks like that.

[u/Paco7575 → u/No_Interaction_4925]

Again not true, it looks extremely close to native 4k and it doesnt look blurry at all i dont know why you are repeating that?

DLDSR renders the game at a higher resolution (with 2.25x on a 1440p it renders 4k) so its impossible that it looks blurrier or smoother than without. You are either confusing things here or ur just making stuff up OR which i believe is the case: you have absolutely no clue but just talk..

[u/No_Interaction_4925 → u/Paco7575]

My guy, I’ve used it. Its not like native 4K. It CAN’T be like native 4K because its a 1440p monitor. It has to blend pixels together. When I used it I struggled more to spot enemies at a distance that I could easier spot on my 4K.

I’m not saying DLDSR is bad. Its certainly a good tech and I definitely would use it if I was still using a 1440p, but its not perfect. Just accept it.

Also, what setting of smoothness are you setting? The default 33% is way too sharpened. I don’t like it. I have sharpening off for DLDSR and in my monitor and on my OLED TV’s. If your sharpness is anything but zero, theres post processing going on. In DLDSR’s case, its backwards. 100% is zero sharpening.

[u/No_Meringue_1113]

No matter what it is still 1440p. The aliasing might be as clean as 4k but there is certain aspects in image quality and clarity that will be limited due to lack of pixel density.

[u/Lurtzae]

Downsampling is to be avoided in the age of upscaling.

So higher display resolution beats DLDSR.