Okay, after two days I have fixed my game, and hopefully yours too; my game had been constantly freezing (rainbow spinner) after every 3rd or so cutscene, just like you who has this issue. It seemed like there was no solution, but after trying everything, I think I have narrowed it down. To start, here is what I had done up until I fixed it: Verified Integrity of game files in Steam, turned V-Sync on in-game, changed Refresh Rate to 60hz in System Settings and capped frame rate in-game to 60fps, turned graphics settings down to a playable setting in-game, deleted all overwrite saves and am only creating new saves (with a limit of 10 or so at a time; just create a new save and keep going from there), turned off Steam Cloud Sync, and finally, deleted 3rd party apps that I figured were affecting this issue.
What I think solved this issue is the final step, which was deleting an app called Little Snitch (blocks apps from sending data through the internet). If you have this app or anything similar, just delete it until you finish this game lol. This paired with changing my in-game frame rate cap from 30 to 60fps is what fixed my game. I did both of these steps at the same time, so I am unsure which one broke the curse, but I'm pretty sure it was deleting Little Snitch.
With this being said, please check your computer using Activity Monitor (built-in application) to see what apps are running that you think may cause a problem with this game. Also, it won't hurt to complete the prior steps in order to follow my lead exactly. I honestly don't know if what I did before deleting Little Snitch helped, but it is definitely worth sorting beforehand.
All in all, if you have any apps running that will affect any and all other apps on your computer's ability to send information in any way, deactivate it. It might solve your problems.
Last edited by toowat; 2 hours ago.