v6.1.0-vrr11: Optimized VRR Pacing and 4K Decoder Fix (Beta)

VRR11 builds on the existing VRR architecture with additional performance optimization and a critical high-resolution decoder fix.

What's New

• 4K VRR is now functional. A decoder synchronization bug could cause decoding to fall progressively behind the stream at higher resolutions. VRR11 fixes that issue so decoded frames remain synchronized with rendering at 4K.
• VRR pacing has been optimized for lower overhead and more consistent frame delivery.
• The on-screen VRR statistics are easier to read, with a shorter status line and corrected text shadowing.

Actual results will vary with the host, network, GPU, operating system, selected stream frame rate, and display. If VRR cannot be used safely, Moonlight falls back to normal fixed V-Sync.

Existing users: After updating, open Settings and confirm that V-Sync and Enable VRR are enabled. VRR remains opt-in in this beta. Moonlight automatically uses borderless fullscreen while VRR is active.

Downloads

Steam Deck Installation

1. Switch to Desktop Mode.

2. Download Moonlight-VRR-6.1.0-vrr11-linux-x86_64.flatpak from the assets below.

3. Open Konsole and change to the download folder:

   cd ~/Downloads

4. For a first installation, run:

   flatpak install --user ./Moonlight-VRR-6.1.0-vrr11-linux-x86_64.flatpak

   To update or replace an earlier VRR beta, run:

   flatpak install --user --reinstall ./Moonlight-VRR-6.1.0-vrr11-linux-x86_64.flatpak

5. Open Steam in Desktop Mode and add Moonlight as a non-Steam game. If an older Moonlight shortcut already exists, remove it and add Moonlight again so Steam selects the user-installed VRR11 Flatpak.

6. Return to Gaming Mode and launch Moonlight.

No sudo, Mesa downgrade, Flatpak mask, or compatibility installer script is required.

Other Linux Distributions

Install Flatpak through your distribution if it is not already available, download the .flatpak asset, then run from the directory containing the download:

flatpak install --user ./Moonlight-VRR-6.1.0-vrr11-linux-x86_64.flatpak

To replace an existing Moonlight VRR build:

flatpak install --user --reinstall ./Moonlight-VRR-6.1.0-vrr11-linux-x86_64.flatpak

Launch it from the desktop application menu or with:

flatpak run com.moonlight_stream.Moonlight

This bundle targets 64-bit x86 Linux and uses the same Flatpak application ID as standard Moonlight. If both a system-wide and user installation exist, your desktop shortcut may need to be recreated so it opens the user installation.

Windows Installation

Installer

1. Close Moonlight completely before installing the update.
2. Download MoonlightSetup-x64-6.1.0-vrr11.msi from the assets below.
3. Open the downloaded MSI and follow the installer prompts.
4. If Windows warns that the build is from an unknown publisher, confirm that you downloaded it from this release before continuing. This beta build is intentionally unsigned.
5. Launch Moonlight from the Start menu when installation finishes.

The installer can replace an earlier Moonlight VRR beta; uninstalling the previous beta first is not required.

Portable ZIP

1. Close any running copy of Moonlight.
2. Download MoonlightPortable-x64-6.1.0-vrr11.zip from the assets below.
3. Extract the entire ZIP to a new writable folder. Do not run Moonlight directly from inside the ZIP.
4. Run Moonlight.exe from the extracted folder.

Keep all extracted files together. The portable package includes the runtime libraries and VRR diagnostic tools required by this build.

If replacing an older portable beta, use a fresh folder or replace the complete extracted directory while Moonlight is closed.

How to Use VRR

1. Enable V-Sync in Moonlight.
2. Enable Enable VRR.
3. Make sure FreeSync, G-Sync, or Adaptive-Sync is enabled for the display.
4. In Moonlight's frame-rate setting, choose one of the entries marked VRR.
5. For the best result, select a stream frame rate the host can sustain consistently and that remains inside the display's VRR range.

SHA-256 Checksums

59091d6cf66048db78830aff2690a94995d40aae01646497488bb3fed7a058f3  Moonlight-6.1.0-vrr11-x86_64.AppImage
df4c70c07f917485260ac44c5da5df98553652275a300813e3ee105d9bbf5c58  Moonlight-VRR-6.1.0-vrr11-linux-x86_64.flatpak
77228dfb2b04b86631c65b04d2c0536a8b09a2c6e31e66eb5103914bc0a23313  MoonlightSetup-x64-6.1.0-vrr11.msi
7f76144a8a3f3d23d318ca26461b99e23eb47a4e0aa8c4e8e5a5bdab70b7fcd6  MoonlightPortable-x64-6.1.0-vrr11.zip

Beta Notice

This remains an experimental beta. When reporting a regression, include:

• the Moonlight session log;
• operating system and GPU;
• display model and refresh rate;
• selected stream resolution and FPS;
• whether VRR, HDR, and hardware decoding were enabled; and
• for Steam Deck, whether the issue occurred in Desktop Mode or Gaming Mode.