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

The Steam Client Beta has been updated with the following changes:

Remote Play

• Removed unused codec settings option.

The Steam Client Beta has been updated with the following changes:

Remote Play

• Removed unused codec settings option.