# Portal 2 Portal 2 - Update

- Product: Portal 2 (https://whatsnew.fyi/product/portal-2)
- Vendor: Valve
- Date: 2022-01-31
- Original notes: https://store.steampowered.com/news/app/620/view/4513171669137090238
- Permalink: https://whatsnew.fyi/product/portal-2/releases/2022-01-31-portal-2-update

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Improve UI for Steam Deck support
- **changed** — Improve performance of controller polling
- **changed** — Improve general in-game performance
- **fixed** — Fix misaligned stack pointer crash in Miles audio
- **fixed** — Fix input action set selection when switching between game and Puzzle Maker
- **security** — Fix Squirrel engine exploits reported via HackerOne
- **fixed** — Guard against maps with corrupt mark surfaces caused by some external tools
- **changed** — Update Steam SDK
- **changed** — Update to DXVK Native 1.9.2a

An update has been released for Portal 2 game and Authoring Tools.

- UI improvements for Steam Deck support
- Improved performance of controller polling
- Other general in-game performance improvements
- Fixed a misaligned stack pointer crash in Miles audio
- Fixed input action set selection when switching between game and Puzzle Maker
- Fixed some Squirrel engine exploits, reported via HackerOne
- Guard against maps with corrupt mark surfaces, caused by some external tools
- Update Steam SDK
- Updated to DXVK Native 1.9.2a