had a goodish time with the demo, had a few framerate issues with the exploration, I can see a few of the mechanics getting frustrating though (I never was keen on time gated mechanics)

I mean that's Persona's whole thing. It's not as stressful or frustrating as you might think out of the gate though like there really is plenty of time to do whatever you're tryin' to do. It's a good way not to forget to do things you should do earlier since the benefits are moot late-game.