It crashes after the main character goes to see the freaks
Viewing post in (NSFW) Personal Trainer: Circus comments
I had the same problem, and I only can advice this : "Be Extra Patience"
From my experience of handling crash in game created on Unity, including Personal Trainer Circus here, it most likely because this novel has a rather plentiful set of motions in the game, can't be properly executed, and ends up with a slow loading (it took about 3-7 minutes in my laptop, the "waiting" may varies or unloaded at all); clicking furiously at the screen or even attempt to exit the game through Esc only worsen it. This may come from incompatibility between the Unity version to certain part of OS, or bugs when the devs extracted the game and was carried into the final output, or the size of the game creates or at least considered as more strenuous work for the computer system.
(oh well, I am no computer expert nor a technician, so those above are mere assumptions)
Despite the problem (A BIT SPOILER), I enjoy and irritated the labour of waiting and solving the maze, because the encounter with the Undead is fairly worth the glitch :')