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gaming at QHD buf gpu scaling to 4k... is this possible on pc

bigmike20vt

bigmike20vt

bigmike20vt

Soldato
Joined
23 May 2006
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( TLDR ) and if so how?
Thanks

Hi

I have a sony 65XE9305 HDR TV and it really looks nice however, whilst the scaler in it certainly looks the part and is great for movies, for gaming if you run anything other than native 4k the lag is quite high (iirc 80ms compared to around 20ms)

on my ps4 pro I can have the games running at 1080p but still have the console scale up to 4k so my TV gets a 4k signal but it runs at 1080p performance and still with HDR on.

is it possible to do this on pc? and if so how ? (only difference here is i would choose QHD instead of 1080p as my 1080ti can manage that easily).

QHD visually i find only ever so slightly different to 4k however it is so much easier on the hardware and i can literally run all settings to the max... 4k on the other hand i need to make compromises to games settings.

but i would like to have my tv displaying 4K if possible.....

thanks
 
In Nvidia control panel go to Adjust desktop size and position>perform scaling on>GPU.

Set the res to 4k and select what ever res you want in the actual games.

I believe that's how it works, not tried it myself
 
Silent_Scone said:
Or simply apply DSR factors also from within the NV Control Panel.
Click to expand...

If I'm reading it right DSR works the other way around to what he wants - he wants to render the game at 1080p and have it upscaled to 4K so as to fill his TV screen without using scaler/post-processing on the TV which results in additional latency.
 
Rroff said:
If I'm reading it right DSR works the other way around to what he wants - he wants to render the game at 1080p and have it upscaled to 4K so as to fill his TV screen without using scaler/post-processing on the TV which results in additional latency.
Click to expand...
exactly! (tho it will be QHD upped to UHD but the point stands :) )

thanks guys for the info i will check out tonight... so just to confirm, in game i select what resolution i want and (hopefully) windows software will do all the rest?

cheers
 
If you set GPU scaling in the nVidia control panel and set the resolution there to the display native and set the ingame resolution lower then in theory it should be rendered at the lower resolution and scaled up before output to the display - in practise your mileage might vary.
 
I would definitely be playing in 1080P on your XE93, as it supports 1080P @ 120Hz

Edit: you want it in game mode :) You should find input lag to jump to around 40ms, which is still fine. Plus, when running at 120Hz, it'll drop back to half of that :-)
 
Yes, DSR renders higher and scales down to native. GPU scaling renders lower and scales up (and might also render higher and scale down if you have custom resolutions above the screen's native resolution, been a long time since ive mucked around with them).
 
james.miller said:
(and might also render higher and scale down if you have custom resolutions above the screen's native resolution, been a long time since ive mucked around with them).
Click to expand...

There are ways to effectively do supersampling with it - but compatibility, etc. is again a bit of a mixed bag.
 
Rroff said:
If I'm reading it right DSR works the other way around to what he wants - he wants to render the game at 1080p and have it upscaled to 4K so as to fill his TV screen without using scaler/post-processing on the TV which results in additional latency.
Click to expand...

Madness, but yes misunderstood. It is possible to use DSR and CRU for the same end, though.
 
Silent_Scone said:
lol, it's not really madness - just would rather if I were you play at 4K in all its glory rather than upscaling
Click to expand...

well i did initially pre-order a 2080ti for that reason... but i decided for a number of reasons to get a 1080ti instead.

i would love to game in 4k full detail, but, after doing some tests, my subjective view was QHD running on full detail at a solid 60fps was preferable to either 4K full detail with a lumpy framerate OR 4k solid 60fps but medium detail.

I also do not have the time to spent tweaking each game individually and working out which features have little impact on fidelity but big impact on performance.
 
Sometimes it's better to omit certain settings and play at 4K rather than sacrifice resolution, though. As much as we all love maxing all sliders available to us, there's a lot of detail we don't notice.

Simply marking whole presets at medium to high rather than ultra can have a negligible impact to image fidelity. All depends on what you play as well, though.
 
i do agree but like i said its a time thing, my game time is v limited these days so i do not want to spend it tweaking settings.

also i was playing around, on my tv at least the jump in clarity from 1080p to QHD is massive.... but the jump from QHD to UHD i actually found to be pretty minimal but with a massive change in performance.

to each their own however.

(also. .... and i have not tried this yet as it only just occurred to me......................)

HDMI does not have the bandwidth for 4k / HDR and 4:4:4 Chroma subsampling

but i imagine it will have at QHD.... (but that said if i try this route then i suppose it will be back to letting my TV do any scaling)
 
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