Abyssus (1721110) / Abyssus_Demo

Hello @DSDV, please clarify if you tested the main game or the demo. In general, the demo of a game has a separate AppID and might have separate technical requirements, so they're treated as separate games in terms of troubleshooting. Additionally, please add [`PROTON_LOG=1 %command%`](https://github.com/ValveSoftware/Proton#runtime-config-options) to the game's launch options, reproduce the regre...