SteamOS 3.8.28 Beta Fixes AMD GPU Performance Drops After Sleep

Valve released SteamOS 3.8.28 Beta, fixing degraded gaming performance on systems with discrete AMD GPUs after resuming from sleep. The fix also applies to Valve's Steam Machine, which uses discrete AMD graphics. The update is available via the Beta and Preview channels.

• Fix targets systems with discrete AMD graphics only
• Valve did not list affected Radeon generations or slowdown severity
• Similar post-sleep issues were fixed earlier for CPU and RDNA1/RDNA2
• Update is available in Beta and Preview channels