Steam on Linux becomes a 64bit app in a Steam Runtime container
Valve's November 11 update runs Steam on Linux inside a Steam Runtime container and adds HDR capture for Remote Play through PipeWire. The patch notes give no performance figures.
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Gaming roundup: Steam on Linux now sends Windows non-Steam games to Proton without asking
Valve's October 13 Steam update runs Windows non-Steam games in Proton by default on Linux and adds an experimental Remote Play codec. Microsoft's KB5127648 fixes mouse stutter in some games.