Could you give your system specs we'd love to sort out whatever's happening here?
Viewing post in Haunted PS1 Demo Disc 2020 comments
It somehow started working again after I booted the PC today. I don't even know if it was something I did (I tried to reinstall the game, run system updates, reinstall the graphics drivers, mess around with the screen configuration) or if the computer was just being temperamental. Thanks for the support anyway, it was probably the PC being shitty.