Best Answer: I usually watch the entire pilot episode (or at least one episode if I can't see the pilot) before I make a judgment. There have been shows I was quite curious about until I saw the pilot and was no longer interested (or just flat out disappointed), but I watched the full pilot or more. Some of these shows would be: "Mr. Robot" (pilot) and "The Mick" (first 2 episodes). I don't recommend these shows.
Other shows I knew after the pilot that I want to see the entire series because it's that good. Some of these shows would be "Manifest," "New Amsterdam," and "Blindspot." I highly recommend these shows.
So, to answer your question, I'd say after one or two episodes - usually one, sometimes two.
good is a judgement call, a vin diesel movie with limited commercials\
I'll tune it on.sometimes yt has decent movies free at that.
all else,, cable .nutflix,etc,gets to ride the flicker
boom crash car chases kaboom,smasheroo, it goes loud too.