Dík za link. Tohle z toho linku asi vysvětluje stav:

Cryptic Passage
As long as you follow all of the above steps for Blood correctly you will not have to do anything special for Cryptic Passage in order to be able to play it except download the shortcut. For some reason, Cryptic Passage doesn't seem to perform quite as well as Blood does. I'm not quite sure why this is. It should still be very playable, though. The framerate is smooth, just somewhat jerky for some reason.