Fluid Lander - フリュードランダー (1064950)

Compatibility Report

• Name of the game with compatibility issues: Fluid Lander - フリュードランダー
• Steam AppID of the game: 1064950

System Information

• GPU: Intel HD Graphics 520
• Driver/LLVM version: Mesa 21.0.3
• Kernel version: 5.11.0-34-generic
• Link to full system information report as Gist: https://gist.github.com/FurretUber/643ce83a840feddb4a41730de91ae2cc
• Proton version: 6.3-6 (tried with experimental too)

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-1064950.log

Symptoms

The game runs slow. I'm not sure if it's a problem or just that an i3-6100U can't really simulate CFD in real time. I tried lowering all settings, improving from 23 to 27 FPS. htop shows around 110%, intel_gpu_top shows 90% Render.

Other than that, from what I tested (defeated the first boss), the game was normal.

Reproduction

1. Open the game;
2. Start a stage;
3. Notice low FPS.

Start by reviewing the attached steam-1064950.log and reproducing the low-FPS behavior with Proton 6.3-6 on the reported system. The report names no source file or test; completion would require identifying a Proton-side cause and validating a performance improvement.