For what it's worth I've moved to Overcast and thus far the experience is far better than with the current iteration of Apple's Podcasts app (Overcast is free now). The changeover was of course a bit of a hassle but it was rather indicative - I'd open Overcast and almost instantly add a podcast subscription. I'd switch back to Podcasts to unsubscribe to that podcast, and see what else I needed to subscribe to, and Podcasts would hang and hang and hang. Finally I'd get the view of my podcasts. OK, good, insta-flip back to Overcast to subscribe to the next one, quick and easy! Switch back to Podcasts to unsubscribe and see what else was on my list ... and wait to just see the display. And so on.