Had a few glitches myself: Game completely crashed on me last night. Got the PS4 equivalent of a BSoD. Also Ignis's hair got stuck in a glitched position, then he completely went invisible. Definite FPS drops in places, but I think those are on "invisible boundaries" where the game starts background loading in assets of the next area.

Still haven't been to Lestallum... nearly Level 30 now and nearing 17 hours played...