Steam Link app only FullHD on 4k TV

[HubbaBubba]

Hallo,

I have a fullHD screen on my PC and I want to stream a 4k signal on my Sony XE90 65" with the new beta app but it doesnt work. I tried nearly everything but I cannot switch ingame to a higher resolution as 1920*1080. Of course the app settings and stream settings are set to 4k.
Except in the big picture setting resolution. The highest possible resoluition is only 1920*1080 :(
Many thanks for your help in advance

[Packetdancer]

Steam Link isn't presenting as a monitor, it captures and streams the video that's rendered on your normal monitor. If that monitor is a 1080p monitor, then that's what your games (and Windows) will still see as their maximum resolution.

With Nvidia and AMD cards you can add custom resolutions (which will be downsampled in hardware to fit on the monitor); you could see about setting one of those up and then changing the game resolution to match, and see whether or not you can play it properly that way? I know in an earlier experiment I did, I was able to capture at full 4k on a 1440p monitor using that trick.

[werner]

You might get a cheap 4k dongle to bypass the problem.

[HubbaBubba]

many thanks for the answers.
but unfortunately both ways are not suitable for me.

i tried it with the amd settings. but when im activating the virtual super resolution(amd downsampling) in the driver i can only switch in windows to 3200*1800 screen resolution and not to the native 3840*2160 :(

And a 4k android dongle with a Lan port is not really cheap i think :(
+ I would have an additional device to my really good smarttv

[JlnPrssnr]

He means a hdmi dummy dongle, I think

[werner]

yes a hdmi dummy dongle maybe in conjunction with a cheap mechanical hdmi switch.

[JlnPrssnr]

You can also try to add the correct 4K resolution to the registry with Custom Resolution Utility and see if it is then available as an ingame option

[HubbaBubba]

Ahh thank you very much your help :)
I will buy a 4k hdmi dongle for 10 euros and then i should be able to switch in the steam settings to the dongle.
But do i need a mechanical hdmi switch? Or whats the function of it compared to the software switch in the steam settings?

[twitch.tv/FiveManDown]

YES YES YES!

On my Nvidia card settings under 3D settings I enabled DSR * 4, then in the resolution settings area you see 2 new options and you can effectively choose 4K.

Then on my PC 1080p monitor everything is mega small and blurry and looks like crap but you can then load your game (RD2 in my case and choose 4k at which point it moans about reducing graphic settings) once the game loads choose 4k resolution in-game.

Now we have a PC and game in 4K.

Then on your steam link app which cant be the original hardware but perhaps an Apple 4K box or a Samsun 4K TV app. You need to set the resolution to be 4k in the steam link app settings.

Turn on the overlay data so you can see what it captures etc when in Steam I see 1920*1080 but when I launch RD2 I now see 4K being captured.

So this whole process works but it is a bit annoying having to enable the DSR resolution each time before playing on my monitor downstairs. On top of that my 100 mbit network speed means it is not always playable depending on what else is happening on the network. I guess as it is 4 times the resolution perhaps it takes close to 4 times wifi data also.

DSR Technology:
https://www.geforce.com/hardware/technology/dsr/technology

[lxy3427]

this is because Android run on TV is @ 1080p ，so you should run steam link on a device @ 3840x2160

[lxy3427]

such as surface pro4 which connect 4k
TV by mini dp to hdmi 2.0