FPS fluctuate wildly constantly, even reaching single digits. It's not too bad most of the time, since there are a lot of static images and text, but it can feel noticeably sluggy and unresponsive.

Game constantly freezes completely after a random time (only the audio continues playing). I don't think I've managed to play a session longer than 30 minutes at best, but usually it happens much earlier, sometimes even just after a minute or two.