STORY OF SEASONS: Friends of Mineral Town (978780)

Compatibility Report

• Name of the game with compatibility issues: STORY OF SEASONS: Friends of Mineral Town
• Steam AppID of the game: 978780

System Information

• GPU: AMD Radeon RX 5700 XT
• Driver/LLVM version: Mesa 20.1.3
• Kernel version: 5.4.0-7634
• Link to full system information report as Gist: System Information
• Proton version: 5.0-9

I confirm:

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

steam-978780.log

Symptoms

While playing with Mouse and Keyboard, there seems to be a weird input lag while performing more than one action, for example while moving with WASD and moving the mouse at the same time. Also keyboard gets stuck sometimes also while moving with WASD and moving the mouse.

Also, while playing with a Steam Controller the controller icons disappear after sometime of gameplay, instead of the icon white square boxes appear, it doesn't happen with other controllers.

Reproduction

For input lag: Load the game, and move around using WASD keys, while moving around move the mouse cursor.
For Steam Controller missing icons: Load the game while using a steam controller and play the game for a while (not sure if there something that triggers the issue specifically).

Start with the attached steam-978780.log and the listed reproduction steps, using the reported Proton 5.0-9, Mesa 20.1.3, and AMD GPU environment. No source file or test is named; progress would require reproducing the input lag, stuck keyboard, or missing Steam Controller icons and identifying a corresponding Proton fix.