https://bugs.winehq.org/show_bug.cgi?id=42930
--- Comment #4 from Béla Gyebrószki gyebro69@gmail.com --- The game works much better for me after commit acc0f49aae9d9d1f00c1544a7ca7dd9923acf0ea, although those flashing triangles still occur every now and then in certain part of the game, but they are less frequent. Most of the scenarios, if you follow the game story, are completely free from the issue if you're playing the game with Wine 3.3 or newer.
wine-3.5-91-g3263d51a1f OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce GT 730/PCIe/SSE2 OpenGL core profile version string: 4.6.0 NVIDIA 390.48