https://bugs.winehq.org/show_bug.cgi?id=39053
--- Comment #13 from sworddragon2@aol.com --- On the NVIDIA tracker I got the information (in april this year) that the case is escalated to their level 2 team. Nothing has happened since then but the ticket is still open. From the developers of the game I haven't got any reply and I have also never seen somebody complaining about this issue of their forum. I'm assuming that the shaders compile on Windows too but maybe they don't get deleted so that the users had this issue only the first time the game got started and don't remember it anymore.