protonscr

ARMORED CORE VI

protonclosed appid 1888160
ValveSoftware/Proton#9790 · opened 2026-05-15 by Madotsukanai · updated 2026-05-15 · 1 comments · github · game page · search this game
MMadotsukanai 2026-05-15 github

Compatibility Report

  • Name of the game with compatibility issues: ARMORED CORE VI FIRES OF RUBICON
  • Steam AppID of the game: 1888160

System Information

I confirm:

  • [X] that I haven't found an existing compatibility report for this game.
  • [X] that I have checked whether there are updates for my system available.

steam-1888160.log

Symptoms

The game freezes at the start of the "Take the Uninhabited Floating City" mission only.
This issue occurs even with Proton 9.0 and the Hotfix.

Reproduction

The game itself runs normally.
Once you reach Chapter 5 of the main story, the operation “Take the Uninhabited Floating City” will become available.
Go to the “SORTIE” menu → “MISSIONS.”
Select “Take the Uninhabited Floating City” and start the operation.
Please check the game's behavior.
The game may freeze immediately after you become able to move at the start of the operation, or it may freeze suddenly after playing for a certain amount of time.
Even if the screen freezes, the audio will continue, and eventually, the game will return to the desktop or require a forced quit.

Kkisak-valve maintainer 2026-05-15 github

Hello @Madotsukanai, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/7045#issuecomment-4459926381/

Proton versions

Upstream links