Episode 4 was pretty good, but it commits what is to me the cardinal sin that so many streaming shows do:
The entire episode is a flashback/side story with none of the principle characters (until the very end). It kills the story momentum with Simon and Trev. While the Doorman story is pretty fun, I still say flashbacks are best used interspersed with the main story and action. See Fallout for an example of how to get it right!
I freaking love though Josh Gad playing himself, and Joey Pants in episode 3 - brilliant!