ShadowSide (643820)

CPU: Intel(R) Core(TM) i7-4765T RAM: 16G SSD: KINGSTON SUV300S37A120G
Video: NVIDIA GeForce GTX 960 4G (nvidia-current 396.54)
OS: MagOS Linux 2016.64
DE: Plasma+compiz-fusion 1680x1050
Proton version: 3.7-8

I confirm:

• that I haven't found an existing compatibility report for this game.
• Game works almost perfectly at beginning, but I have not tested whole the game

Issues

• I have got a visual issue https://ibb.co/yYVTQ61 at some places.Developer said what windows user of nvidia GTX 960-970 also had this bug. He can't reproduce and fix it at this moment.
• I have a problem when turning with mouse, invisible mouse pointer goes to screen's border and disallow to turn camera more at this direction. To workaround press Esc and return mouse pointer to center of screen and press Esc again. May be this issue is related with my settings after "protontricks 643820 vd=1680x1050 windowmanagerdecorated=n windowmanagermanaged=n"

Start by reproducing game 643820 with Proton 3.7-8 on the reported Linux, NVIDIA, Plasma, and compiz-fusion setup, checking the linked visual artifact and the mouse-turning behavior. No repository files or tests are named; done would require identifying whether either issue is reproducible and locating the relevant Proton or Wine component.