I have the same issue. Messed with the settings as suggested in this thread and found that I can keep the DPI and Windowed Fullscreen without change. I just have to drop down to DX9 and restart the game. Everything works fine. My graphics aren't as great as they would be with DX11, but I can preview my toon while maintaining the other settings without issue.
Hope this helps someone else as a workaround until they eventually fix it.