This is a guide for running Lossless Scaling for a Moonlight game stream on Linux (Ubuntu in my case). For a TL;DR, skip to "How to run it"

My Setup

Hey, I have a setup in which I stream video games via Sunshine and Moonlight from my gaming PC to my laptop. The laptop itself is also somewhat beefy (LOQ-15ARP9), but struggles with playing games on Ultra High settings. Both are connected via LAN in this case. I am running Ubuntu 24.

I recently saw a video by Linus Tech Tips where they featured Lossless Scaling, which interpolates frames to increase the smoothness. As in, interpolating the frames from 60 to 120 for example. I was super curious whether that could work with Moonlight streaming since my laptop GPU wasn't really doing much when streaming anyways, so it could handle interpolation.

Apparently, Lossless Scaling is a Windows-Only solution, which really bummed me out. But there is a linux wrapper for it by PancakeTAS on GitHub called "lsfg-vk".

Using that, together with the standalone Moonlight version and forcing Vulkan on it, made it work. I was able to play on 120fps while streaming a 60fps game. In this post I'd like how you could set that up as well if you want to try it out. Mind you, there is a really noticeable amount of latency when doing so (on top of the existing latency from streaming), so I wouldn't advice it for any game where you'd need to react super quickly. For that reason, I may actually pass on it, but I thought I'd still share it for anyone searching that is trying out the same - because I didn't find a lot of resources for my specific use-case.

How to run it

What you need:

• You need the original Lossless Scaling installed (yes, the windows version. I used Steam to buy it)
• You need to install lsfg-vk (Follow the instructions), which is somewhat of a Lossless Scaling wrapper for Linux
• You need to install the standalone version of Moonlight (.AppRun)
  • You could try making it work with the snap or flathub version, but I was unable to. Let me know if you are able to.
• You need to be able to render with Vulkan. This may sometimes need additional drivers. Step 3 should make clear whether you're correctly set up for Vulkan or not.

What to do:

1) In the terminal, enter "lsfg-vk-ui"

2) In the UI of lsfg-vk-ui, set the exact path in "Path to Lossless Scaling" to the Lossless.dll from the Lossless Scaling installation. The path has to end with "Lossless.dll", not the parent directory.

3) Make sure everything is set up correctly with "lsfg-vk-cli" validate and "lsfg-vk-cli benchmark".

3) In the UI of lsfg-vk-ui, configure "Active In" for a profile to match "AppRun".

You may be wondering why I use such a generic way to match the stream. lsfg-vk allows us to match file names, binaries, but also process names. No matter how hard I tried making lsfg-vk run with matching it against "Moonlight-6.1.0-x86_64.AppImage" (The binary name), it wouldn't work. That is because Moonlight starts another process for the stream. So we're basically only interpolating the app selection in Moonlight, not the stream itself. To make it run for the stream, we need to match the new process, which is called "AppRun". I understand that there may be multiple applications running on your system that are called "AppRun", but in my case there wasn't and in my case it was the only way I was able to match the stream. If you know of another way, let me know!

3.5) Configure the lsfg-vk-ui profile to run on your machine. You mostly just have to play around with the settings.

4) Run Moonlight using Vulkan

Moonlight seems to run with OpenGL by default, but lsfg-vk needs Vulkan to interpolate it, so we need to run Moonlight via Vulkan. We can force Vulkan by starting Moonlight with the following command: PREFER_VULKAN=1 Moonlight-6.1.0-x86_64.AppImage

5) Start a stream and it should now be interpolated. Yay. Please read "Things to note"

6) Optional: If you have GitHub account, then star all the free and open-source resources involved and consider throwing the super cool people that made this possible a coin.
Here are the GitHub links: lsfg-vk, moonlight, sunshine

Things to note:

1) It is super important to note that the stream on the client and the game that you're streaming both need to be running on the same constant frame rate. After all, we're not interpolating the game, we're interpolating the stream. So if the game has a big dip in FPS to for example 50, but the stream still runs at constant 60 FPS, then Lossless Scaling will interpolate thinking its working with 60 frames. This means you're going to feel Dips in FPS even more - which could have the contrary effect of wanting to smoothing the FPS and make it stutter way more instead.

2) There is a big latency cost. It can be reduced by lowering "Flow Scale" and reducing the "Multiplier" in your lsfg-vk profile - but always at a cost of quality and never to zero latency. Interpolation always comes at the cost of latency.

3) Don't take everything I mention here as perfectly valid and feel free to comment and constructively criticize. I'm just a dude that tried to make this run at 2 AM, so I'm sure there is a lot of stuff wrong or missing. If you find something, let me know and I'll correct it.

submitted by /u/SlothInFlippyCar
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Honestly, the only thing keeping me on Windows right now is the differences between those two OS are game launchers. On Windows I use Playnite, because it lets me keep games from all launchers in one place (Epic, Steam, Ubisoft, etc.). I use my PC connected to TV and I’d like to have my library of games well organized. oh and I have to navigate it by controller.

Is there anything like that on Linux? Some kind of unified launcher that pulls everything together, basically a Playnite equivalent?

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Stumbled upon this git issue recently:

https://github.com/Heroic-Games-Launcher/HeroicGamesLauncher/issues/5089#issuecomment-3692839406

Context: a user had some kind of authentication error that resulted in GOG miscommunicating with Heroic for a few days, reporting no owned games. This resulted in their GOG library being hidden by Heroic to prevent launching.

It seems like this is intended behaviour. From one of the contributors:

Nothing about launching an installed GOG game inherently requires authorization, however, if you do not have access to the game on your account anymore, this generally means that you no longer have a license for that game (when purchasing a game on GOG, you get a license for that game, as explained in point 2.1 of their User Agreement). If the license is revoked (for example, you refund a game or delete your account entirely) and Heroic would still let you launch that game, it may lead to legal issues

Does anyone else find this concerning?

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I am super keen to move my gaming PC from windows 10 to Mint (as my laptop currently runs Mint) however I am a huge fan of wallpaper engine and in particular a certain wallpaper persona 5 theme (https://steamcommunity.com/sharedfiles/filedetails/?id=2955378002).

I love the phantom thieves style calendar, the time sync city (the music is a nice bonus but I know I could implement that other ways or just use a music app so its not a priority). I've done some basic research but I am not sure if those elements will work with the wallpaper engine kde plugin, or if there is another way to implement them.

It might sound ridiculous to be held back by such a small thing but I genuinely love the feel it adds, so any help would be much appreciated. Thanks in Advance.

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Repeating what I posted a year ago.

https://www.reddit.com//r/linux_gaming/comments/1hqlfwb/2025_what_are_your_wishes_and_hopes_for_linux/

My first question is, did things you wish for last year happen? If they did, are you satisfied with them or not?

Second and main question is, what are your wishes and hopes for Linux gaming this year? It could be anything, small or big, so don't shy away from sharing.

• My biggest wish at this point is NTsync, Wine Wayland and Wine WoW64 implemented in Valve's Proton. I've been using NTsync since it's inception with Wine TkG and Wine Wayland since Wine 9.0-rc1. These things are now in GE-Proton and they perform amazingly. I'd like to finally see them in Valve's Proton too.

• I would like the Steam client to be 64-bit on Linux. It's even 64-bit on Windows now too. It's literally the only 32-bit application on my system. Which means I need multilib enabled and 32-bit system libraries installed on Arch Linux. Wine WoW64 also allows me to play 32-bit Windows games without any 32-bit system libraries.

• I want the Steam client to get a full UI or toolkit overhaul. I want it to run over Wayland natively and not over XWayland. It sucks imo. Right click menu is utterly broken. I can't ever properly right click. I hate having to edit launch arguments for a game because of this. I have to right click dozens of times.

• Full DualSense haptic feedback support in Wine/Proton. Valve has made a lot of progress with this in 2025, but some games are still missing support, like the first two Spider-Man games (Spider-Man 2 works).

Third question. What do you DON'T want to see in 2026? Anything specific?

Final question. Other than Linux gaming, what are your general wishes for Linux in 2026?

• I would like motherboard and hardware manufacturers to take Linux as an OS more seriously and provide firmware updates through fwupd.

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I don't know why but my mods still stuck in download state after my steam restart, but once i reinstall rimworld the mods show up again until the next time i restart rimworld.

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this hasnt started until i started overclocking, but i now have the gpu at base settings, yet it still has issues. ive begun using the default linux kernel, rather than the one from cachyos, specifically, 6.18.2. ive tried reseating the gpu, but that still hasnt worked. is my gpu defective, do i have to reinstall fedora, or is it user error? thanks for helping.

https://preview.redd.it/gic6s2cjdpag1.png?width=554&format=png&auto=webp&s=f2349d27771a743e81cc4abaae500ec9859e1423

https://preview.redd.it/xellkk3qdpag1.png?width=777&format=png&auto=webp&s=7876f16ee8077759f99af68b18363b2552ff222e

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It’s been some time since I’ve been into pc gaming and now Linux has become viable, I’m looking at upgrading my very outdated gaming pc and wanted some feedback

My current pc has a gtx 1060 (6gb) ryzen 5 2600, corsair vengeance ram (DDR4 3000 MHz), MSI B450M MORTAR Motherboard mATX, Corsair VS650 Power Supply Unit. Stock cooler on the cpu

Proposed upgrades:

Thermalright Peerless Assassin 120 SE

AMD Ryzen 7 5700X3D

Radeon RX 9070 XT

Corsair RM750e

Another 16gb of the same ram

As ddr5 is so overpriced, my idea was to keep my motherboard and stay with my current ram level, assuming the large cache on the cpu will help pick up some of the slack.

Asking various AI for advice and it suggests this will be enough for running most things in 4k with upscaling. But wanted to get some feedback from real users

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ı using laptop and external monitor my laptop screen can use 144hz but my external monitor Even though I set it to 180 Hz its only at 60 Hz

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Pretty much what the title said. My PC is quite literally ancient, i3-2100 cpu, no gpu and 6gb ram(2gb + 4gb stick I added later)

I've played older GTA and COD games on this and some others like zoo tycoon and mount and blade warband and older minecraft versions with pirated launchers. All of these with no crashes or fps issues(except maybe minecraft multiplayer)

What I want to know is will using linux/steamos/bazzite increase my library in the sense that will it allow me to play more games that I can't play already in windows 7 64 bit? And if yes can I also install bazzite or whatever without clearing entire harddisk?

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Hello, I'm making this post since I needed a solution for this and didn't find it anywhere and just tried random things until it worked, so I'm trying to help others.

Basically my RX 9070 XT began crashing my Arch system only while playing in Resident Evil 2 Remake in the sewer section, only in one specific spot. Journalctl showed a driver crash, specifically a "ring gfx_0.0.0 timeout" error.

Many people said it was a driver problem, but I found it strange since it only happened in this specific game (maybe it is and this is just a workaround, but still)

After trying everything I found out that the problem was with the crappy Resident Evil 2 DX12 implementation, and that explained why I never encountered the problem any other RE Engine title. I even tried to play Cyberpunk 1440p native path tracing to stress test the GPU without it crashing.

TLDR: the solution was to add "PROTON_USE_D11VK=1" in the arguments of the game on Steam, The game didn't crash even after hanging out in the same spot for about 2 hours.

I'm on Arch 6.18.2, Mesa 25.3.2. GE-Proton 10.27, but this happened with any other Proton version.

I hope to help some people, happy gaming.

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https://reddit.com/link/1q0y7lj/video/bb8ci6nuqoag1/player

Video shows it all. Generally the game performs fairly well especially in outdoor scenes however I have noticed that indoors there is sometimes light source "pop in" where the game will hallucinate and forget V is indoors and act as if there is no roof allowing sunlight in, and in this clip you can see the game is switching between light sources as I walk along the hallway with the large window, sometimes letting light in from the window and other times not. Additionally there's the matter of the very obvious artifacting in the room with the elevators, not seen in the room at the start of the recording. I noticed this only happens when the game is using Path Tracing (used in video) or any of the ray tracing presets and none of these problems occur when ray tracing is off.

I'm playing on Arch Linux 6.18.2 and KDE Plasma 6.5.4 (Wayland) with the latest Proton-GE (10-27) and stable Mesa (1:25.3.2-1)

Graphics card is an AMD Radeon 9070 XT

My Steam launch options are: DXIL_SPIRV_CONFIG=wmma_fp8_hack PROTON_FSR4_UPGRADE=1 gamemoderun %command% --launcher-skip --intro-skip

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Hi, long time windows user contemplating whether i should full port to linux.

My AI workload requires me to go to ubuntu 22.04 (which i read is 3-year outdated?), and another on 24.04.3 (is this good? i heard it's 1-year late).

But I prefer my machine to be gaming first, AI second.

Would like opinions on linux users (not dual boot) who made the transition successfully and are able to juggle both.

Thank you.

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So I decided to try bazzite and made a bootable usb but when it booted up (did not format my drive) it didnt detect my wifi and it did not seem shal we say complete. What did I do wrong?

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Having just installed Pop!_OS, I decided to try a bit of an experiment -- I wanted to see if ChatGPT could walk me through installing Battle.net and getting it working, start to finish, no Googling (I previously did it myself on Ubuntu Cinnamon, but it was through Steam, and I definitely didn't remember everything I did).

I figured a fun way to present it would be by just giving you my prompts to ChatGPT in order. You can definitely see as I start to get frustrated with both Lutrin and ChatGPT itself. There's something so genuinely irritating about the constant affirmations -- "Good catch -- that was never going to work!" -- when it was the thing that told you to do that in the first place.

The human side of the conversation follows:

I've just done a fresh install of Pop!_OS, and installed Lutris and Steam. Can you give me a clean, clear, step-by-step guide on how to install and run Battle.net? I got as far as step 4 -- "First launch + sign in". When I launch Battle.net, it either freezes and crashes, or else the GUI for the login screen flickers on and off repeatedly. There doesn't appear to be any way to install a new or specific version on the "Manage wine versions" menu screen? There still isn't any way to download a new Wine version. One is already installed: wine-ge-8-26. There is nowhere, and no way, to specify a different version to download, that I can find. I get this error when trying to run sudo apt install protonup-qt: E: Unable to locate package protonup-qt Lutrin doesn't seem to be picking up the new installed version of Proton, though ProtonUp-Qt shows it existing. You aren't quite correct. ProtonUp-Qt installed to ~/.local/share/lutris/runners/proton, whereas Lutris seemingly is only looking in ~/.local/share/lutris/runners/wine. Every step I've taken has been at your direction, from the very beginning. Now you're telling me that ever since you told me to install Proton, you've been steering me down the wrong path completely. Why? There's no option for Wine-GE in ProtonUp-QT, and Lutris-Wine -- the closest match I found -- caps out at version 7.2.2. The version of Wine installed in Lutris -- wine-ge-8-26-x86_64 -- would seem to be more recent. Hang on -- you're assuming the issue is fixed. It isn't. Even with --no-browser in the arguments, the display still flickers. I would certainly prefer *not* to switch from Wayland to Xorg. Is there genuinely no way to force Lutrin to launch Battle.net via Proton instead of Wine? All right, let's go with Steam, then. Walk me through it. It didn't flicker anymore, but for some reason I had to unfocus the window -- click away -- and click back a few times to get the GUI to work correctly. Any idea why this is happening, and how to prevent it in the future?

The good news is -- Battle.net is now working reliably! Just Battle.net, mind you. I haven't even tried installing any of the actual games through it yet. As I recall, I had use Gamescope (compiled from source, since of course it's not available on any of the Ubuntu package managers) to fix some issues with UI scaling and cursor behaviour. That's a tomorrow problem.

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Any ideas? It wasn't installed by flatpak. And the games it is showing the old driver version for, are launched through Steam, which wasn't installed through flatpak either. I am wondering if this is why my FSR4 launch option isn't working.

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