May 17, 2021 Patch

{{Patch layout
 * source = https://steamcommunity.com/games/portal2/announcements/detail/5208954353363013197
 * source-title = Portal 2 - Update
 * before   = March 02, 2021 Patch
 * current  = May 17, 2021 Patch
 * after    = N/A
 * notes =

Portal 2
}}
 * Fixed custom maps with no lights disabling lighting for the rest of the play session
 * Fixed Model Viewer and Face Poser not opening
 * Fixed demo playback for workshop maps
 * Fixed some text corruption related to UTF-8 conversion in some instances on Linux
 * Moved the 32-bit Linux binaries into linux32
 * Misc. rendering and other optimizations
 * Removed the 100MB workshop level file size limit
 * Added a +bench_demo [name] command line parameter which will run a demo, and quit after it is finished.
 * Added a -bench_settings [name] command line parameter to load a cfg/video_bench_{name}.txt file containing settings to load. There are a set of defaults provided, very_high_4k, very_high, high, medium and low.