I'm running an instance and as a software it's OK. But you never know if your subscription tab has nothing new because there is a bug in the ActivityPub code or just because nobody is posting on peertube.
Another thing is that most of my video watching I do on the TV but there is no app for android on the TV which give you a UI like the many apps streaming providers offer. So at least for me it's limited to very seldom watching something on the laptop when I remember.
Discover ability is another problem, similar to Mastodon it's difficult to find new people to watch. That is solved much better on Lemmy with the communities.