Can't go into fullscreen mode after changing APIs (OpenGL) #38

Just like in the title, I can't go into the fullscreen mode after changing API from OpenGL to Direct3D and back to OpenGL. Now any time I apply fullscreen when using OpenGL, the game simply defaults to 640x480 windowed. This issue doesn't exist in Direct3D mode, but I can't play with this API either due to terrible performance (with and without DXVK) in random places.