I am seeing the exact same thing under Wayland
I don't know which version of Steam it was but I had more than one Android device, with different versions (8 and 5) running very well. I always turned off the monitor and was always on Windows 11.
Android TV had some buffering issues, may have been a network problem.
Then a while back, I started having issues on Android devices, where with the monitor turned of, the streaming device would have a black screen but you could still hear Big Picture moving on the receiving end. Sometimes I had to go to the streaming PC and manually alt-tab to the game and it would work.
Right now, I am on Windows 11, exactly as this thread is describing: monitor off, you have picture but the performance is incredibly bad and everything lags. Monitor turned on and it goes normal immediately.
I am on an older Nvidia 660 now but I also had these issues with a Radeon R9 290, though there the screen was black.
I have tested the same machine running Linux, with the R290, and the game on the streaming PC would also start micro-stuttering as soon as Remote Play started. As far as I can tell, it was using hardware encoding and the PC was not stressed as this was an old game. (I could SSH and monitor through htop)
P.S.: There is a Display option on W11 that is "Minimize windows when monitor is disconnected". I think this may have been the culprit of the black screens but performance is still erratic, as described.
I'm having the same issue on Bazzite/Fedora Kinoite.
+1 here
NixOS 25.11
Gnome 49
Wayland
Linux Kernel 6.19.3
Mesa Gallium driver 25.2.6 for AMD Radeon RX 6800 XT (radeonsi, navi21, LLVM 21.1.7, DRM 3.64, 6.19.3)
Steam version: 1769025840
Getting the same behavior on my PC too.
Operating System: CachyOS Linux
KDE Plasma Version: 6.7.3
KDE Frameworks Version: 6.28.0
Qt Version: 6.11.1
Kernel Version: 7.1.4-1-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 9800X3D 8-Core Processor
Memory: 64 GiB of RAM (60.2 GiB usable)
Graphics Processor 1: AMD Radeon RX 9070 XT
Graphics Processor 2: AMD Ryzen 7 9800X3D 8-Core Processor
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7E12
System Version: 1.0
Steam Version: 1784778118
Nothing extracted yet.
Your system information
Please describe your issue in as much detail as possible:
I noticed that Remote Play has a horrible performance which made just navigating in the Big Picture Mode pretty much a hassle, it turned out that I had to leave my monitor/display connected to the streaming host switched on. As soon as I switch it off the performance suddenly degrades. I haven't done much with Steam Remote Play lately since I got an AMD card but I can't remember it being a problem at all for years when using an NVIDIA card so I my guess is some kind of powersafe feature kicks in when no display is active/connected to the GPU. So if this a known problem and there's just a setting I need to set somewhere please let me know, on a quick search I couldn't find anything that seemed relevant to me.
Steps for reproducing this issue:
Additional information
Distribution default:
/usr/share/X11/xorg.conf.d/10-amdgpu.confManual settings:
/etc/X11/xorg.conf.d/20-amdgpu.conf