I broke down each level in my live splits to entering the second area(rocket, down slides to second pools, elevator) and am force completing the level even if run is dead and resetting after to collect data and here is roughly what I obtained will update with closer values as I obtain them

infinity cool: yet to see the lower limits so time there can be decreased a fair bit atleast lose 2 minutes(my averages suck rng just unlucky to record a lower value)

quacking the ice best possible is 9:09:xxx(can't go lower than this due to lift animation doesn't spawn any earlier or move)

hippospace download: 11 minutes rocket animation+duck floating(15 minute theoretical)

rooftop one percent: best to elevator so far:3:14 and loop by 7:54

(current estimated fix value{33:09:xxx})(20 minutes are basic forced wait due to 11 from hippospace and 9~ on quacking the ice)

current averages per level: format> enter second area. end/return to start

infinity cool: down slide 8:01. return pipe 14:13

quacking the ice: down slide 5:21. drop from lift 12:04

hippospace download: enter the rocket 7:05. drop 18:59

rooftop one percent: into elevator 9:16. down gutter back 15:15