I only watched the first episode and "Nope"d out. I came over here this morning to see if it got any better in the subsequent episodes. Apparently it didn't, so no FOMO. I don't find Riseborough that interesting or compelling as an actress, and I've only ever liked Gleeson in a series he did with Merritt Wever as the love interest, Run.
So, I'm glad I didn't waste anymore time on this one.