Wow, the image quality is amazing now, holy shit. I switched between the modes multiple times, trying to find differences - but it's really, really hard. I hope we will see more games that use this tech for 60fps modes.
Kinda regret now playing through this game at 30fps tbh, I don't think I'm willing to accept bad 60fps modes going forward. I guess I'm just going to skip 30fps-first games until they are playable with great image quality at 60fps, either via an upgrade or by playing them on new hardware (PS5 Pro).