Return to Mysterious Island (277110)

Compatibility Report

• Name of the game with compatibility issues: Return to Mysterious Island
• Steam AppID of the game: 277110

System Information

• GPU: GTX 970
• Driver/LLVM version: nvidia 435.21 440.64
• Kernel version: 4.15.0-96-generic
• Proton version: 5.0-5

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-277110.log

Symptoms

Everything seems to run fine, except for 2 things. The framerate is crappy (about 11-25 fps) and, what's much worse, there is MASSIVE stuttering when the mouse changes directions. A low framerate is tolerable but the stuttering makes it very hard to play.

No launch option really made any kind of difference. I tried it in fullscreen, and windows mode. I tried with software and hardware rendering. Nothing helped.

Reproduction

Run the game and move the mouse back and forth. Watch the framerate and compare that to not moving the mouse at all.

Start by reviewing steam-277110.log and reproducing the issue with Return to Mysterious Island while moving the mouse back and forth. Compare behavior across the listed rendering modes, window modes, and Proton version; done means identifying and resolving the low frame rate and mouse-direction stuttering.