https://bugs.winehq.org/show_bug.cgi?id=41653
--- Comment #4 from donanykey@gmail.com --- It appeared the game uses direct3d acceleration heavily with default wine-staging. So flickering is from there.
There is an option from developers to "disable the new Starling renderer" with `starling=false` command line option as described in docs.google.com/document/d/1xXKMaroP1t18BXEKrl0YpFamg-ZN8wPk-vTt0rAq53M/edit?pref=2&pli=1
The flickering will gone though the picture will be notably slower, but still far more playable than with plain wine
(Wine 1.9.22)