There are many quests i won't play (unless im forced to) because of the forced wait times... Just Business, Madstone (3 mins at each seer is ridiculous), AT before the change. Immortality Lessons and the polar bear one, I'd just afk at the start (same with JB now but it's not just that one cutscene). Just started playing Toil, feels like it'll make the list. The Nec 3 one with the gates. All of Dragonborn Prophecy, if you include long empty hallways. Spinner of course and the end fight of Lords of Dust. Chains of Flame, most of Vale, most of Stormhorns, Kings Forest, older stuff like Restless Isles and Sorrowdusk and Threnal if you include long treks to quest entrances.
The lesson to be learned here is don't create forced down time. It's not immersion, it's annoyance. Players want to play. Playing, broadly, means actively engaging with content for rewards that justify the time spent.