Hi ahimek,
Lynn here - thanks for the detailed report.
May I ask about your Mac’s hardware version and OS version? We’ve tested M1 Mac on Catalina as well as older Macs on older OS and they seem to work. 😅
I’ve searched around and this Reddit post mentioned something about the AMD card causing issue. Here is their solution using an Nvidia card.
RenPy needs access to performance counters and is being denied by the default setting. Mine was an NVidia card but there should be a similar setting for you AMD folks.
Open Nvidia Control Panel (Not Experience)
Click on Manage GPU Performance Counters (If the Developer section isn't there, click on Desktop at the top -> Enable Developer Settings)
Click on Allow access to the GPU performance counters to all users
Apply
If this doesn’t work, it’s still possible to play the game by downloading the source code from GitHub and the Ren’Py Launcher app and directly launching the code from Ren’Py. (And if Ren’Py launcher crashes, that’s definitely a hardware or OS problem 😅)
I’ll keep following up on this. Hope you get to play the game soon :D