SteamOS 3.8.28 Beta has been released, providing a targeted fix for performance issues experienced by systems with AMD discrete GPUs following sleep/resume cycles. This update removes the previous "Known Issues" banner related to an FSR/composition regression, indicating that the problem may have been resolved. While the fix is minor, it addresses a significant issue for users of third-party AMD-dGPU laptops and desktops, as Valve's own devices utilize integrated APUs. Overall, this release reflects Valve's focus on refining graphics power management and stability rather than introducing new features in their operating system

SteamOS 3.8.28 Beta Fixes AMD dGPU Performance Drops After Sleep Resume

SteamOS 3.8.28 Beta contains a single change targeting degraded game performance on systems with AMD discrete GPUs after a sleep/resume cycle. The build drops the "Known Issues" banner that had flagged an FSR/composition regression across several recent betas, suggesting that issue may finally be resolved at the beta level. Though small on paper, the fix matters most for the growing crowd running SteamOS on third-party AMD-dGPU laptops and desktops rather than Valve's own Steam Deck. 

SteamOS 3.8.28 Beta Fixes AMD dGPU Performance Drops After Sleep Resume @ Linux Compatible