We have just shipped an updated Steam Client to the Preview/Beta channel.

General

• Fixed regression causing video playback to fail in some games.

• Improved notification settings layout in some languages

This update is for the SteamOS Beta and Preview channels, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel.

Known Issues - Beta

• There is a known issue with degraded performance in some cases when composition is required (such as when having FSR enabled).

  This issue is fixed in the latest SteamOS stable release (3.8.16). Affected users may wish to switch to the stable update channel while we work on bringing this fix to the beta channel.

General

• Fixed an issue causing black screens in certain launchers, including Zenless Zone Zero and FINAL FANTASY XIV Online

SteamOS 3.8.16 has just been released for all users with the following changes:

General

• Reverted a change from 3.8.15 resulting in some titles showing a blank screen. The Assassin's Creed Black Flag Resynced HDR fix will be available in Beta while the root cause is investigated.

This update is for the SteamOS Beta and Preview channels, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel.

Note: This beta contains changes that were simultaneously released to SteamOS stable channel as 3.8.15, noted below

Known Issues - Beta

• There is a known issue with degraded performance in some cases when composition is required (such as when having FSR enabled).

  This issue is fixed in the latest SteamOS stable release (3.8.15). Affected users may wish to switch to the stable update channel while we work on bringing this fix to the beta channel.

General

• Fixed delayed start time for some games under Proton when no capture device is present

• Security and stability improvements

Fixed in 3.8.15

• Fixed an issue with HDR in Assassin's Creed Black Flag Resynced

SteamOS 3.8.15 has just been released for all users with the following changes:

General

• Fixed an issue preventing enabling HDR in Assassin's Creed Black Flag Resynced

• Fixed an issue that would result in degraded performance in some cases when composition was required (such as when having FSR enabled)

• Security and stability improvements