I love the Foundation series(the books) and I actually really enjoyed the TV show - I just don't think they are very related other than some surface level connection.
I don't think it's too bad either. It's very pretty, I like the cast (the Emperor is just the perfect amount of 'regal' and 'ewww'), and the plot is actually pretty interesting so far. It just isn't the plot of "Foundation" beyond the thinnest veneer of "math predicts future and bad things are gonna happen but if we do this right we shorten bad stuff...cue drama happening". If it wasn't called "Issac Asimov's Foundation" and constantly screwing with my expectations from the books (which are a favorite), I'd give it a solid B+. I gotta get better at shutting down the "expectations from book" part of my brain.