May 25, 2010 Patch (Portal)

{{Patch layout
 * game = portal
 * source      = http://store.steampowered.com/news/3865/
 * source-title = Portal Update Released
 * before      = May 15, 2010 Patch (Portal)
 * after       = May 27, 2010 Patch (Portal)
 * notes       =

Portal
}}
 * Performance improvements
 * Fixed crash during offscreen rendering
 * Fixed overbright screen when rendering with Radeon X1x00 on 10.5.8
 * Fixed subtitle mode to not include sounds, use close captioned mode for that functionality
 * Fixed achievement awarding being delayed to map change
 * Fixed view jumping when coming back from the in-game UI to the game
 * Improved support for using the Command key as a key bind