# Proton proton-11.0-1-beta5

- Product: Proton (https://whatsnew.fyi/product/valve-proton)
- Vendor: Valve
- Date: 2026-05-19
- Version: proton-11.0-1-beta5
- Original notes: https://github.com/ValveSoftware/Proton/releases/tag/proton-11.0-1-beta5
- Permalink: https://whatsnew.fyi/product/valve-proton/releases/proton-11.0-1-beta5
- Labels: Platforms: Linux

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'.

---

- **fixed** — Controller input issues in Deus Ex: Mankind Divided
- **fixed** — BattleBit Remastered is playable again
- **fixed** — Terraria performance regression compared to Proton 10
- **fixed** — Arma 3 workshop mods unnecessarily updating on each launch
- **fixed** — Assassin's Creed Shadows is playable again

This is a small update, for full Proton 11 changelog see [beta1](https://github.com/ValveSoftware/Proton/releases/tag/proton-11.0-1-beta1).

- Fixed controller input issues in Deus Ex: Mankind Divided.
- Fixed Proton 11 regressions:
  - BattleBit Remastered is playable again.
  - Terraria should no longer perform worse than on Proton 10.
  - Arma 3 workshop mods should no longer unnecessarily update on each launch.
  - Assassin's Creed Shadows is playable again.