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While it is pretty good, episode 5 doesn't share much resemblance to episode 4 in terms of staff. Aside from having a different director there's only four returning animators for this one. Shu Sugita and TOMATO's scenes were fantastic but overall it's your usual episode of Priconne.Did you go straight into episode 5? I assume it had much of the same staff as they were a two parter.
It gets even more epic, especially the climax (spoilers obvs):
shuu sugita princess connect re:dive princess connect re:dive season 2 princess connect re:dive tv remake animated character acting creatures debris effects fabric hair smears smoke | #179455 | sakugabooru
animated character_acting creatures debris effects fabric hair princess_connect_re:dive princess_connect_re:dive_season_2 princess_connect_re:dive_tv remake shuu_sugita smears smokewww.sakugabooru.com
Episode 4 is up there with the likes of Hakuyu Go's Mob Psycho 100 II episode 5, Fate/Apocrypha episode 22 and Nakaya Onsen's Fate/Babylonia episode 19. These kinds of episodes happen very rarely in the industry.