SteamOS 3.8.15 Update Fixes HDR and FSR Performance on Steam Deck

Valve released two new SteamOS updates that address specific graphical and performance issues for Steam Deck owners. The stable channel update brings critical fixes for HDR support and frame pacing, while the beta channel targets startup delays. These changes matter because they resolve bugs that previously disrupted gameplay in popular titles and hindered the user experience for early adopters testing new features.

Stable release resolves HDR and FSR issues while beta targets startup delays

The stable release, version 3.8.15, focuses on compatibility and rendering stability. It includes a fix for Assassin's Creed Black Flag Resynced, where HDR settings previously failed to enable. The update also resolves a performance degradation issue that occurred when composition was required, such as when FSR was active. This ensures smoother gameplay for users relying on upscaling technologies.

• Stable Version: 3.8.15
• Beta Version: 3.8.23
• HDR Fix: Fixed an issue preventing enabling HDR in Assassin's Creed Black Flag Resynced
• Performance Fix: Fixed an issue that would result in degraded performance in some cases when composition was required (such as when having FSR enabled)
• Beta Fix: Fixed delayed start time for some games under Proton when no capture device is present

Valve provided the following details in the stable update notes: "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 beta channel, version 3.8.23, offers a different set of fixes. It addresses a delayed start time for some games under Proton when no capture device is present. The beta notes state: "Fixed delayed start time for some games under Proton when no capture device is present. Security and stability improvements."

The FSR performance fix in the stable channel is not yet available in the beta channel. Valve has released the performance fix in the stable update while reserving the HDR correction for the beta channel, indicating a strategy of addressing critical stability issues for all users before expanding broader fixes to testers. We looked at the last SteamOS update earlier while tracking NVIDIA launches, and several of the same balance and stability themes came up in this release. Both updates include general security and stability improvements alongside the specific bug fixes.

SteamOS 3.8.15 is now available for stable channel users, and 3.8.23 is available for beta testers. Owners of the Steam Deck should check for these updates to resolve the HDR and performance issues described. The updates provide immediate fixes for known compatibility problems without requiring hardware changes.

Source: SteamDeckHQ