I suppose this episode plays to the strengths of the series the most: whether in the scheming and politics (which at this point do not yet feel hollow) or the dark, brooding, brutal development of the plot (at a fairly moderate pace). King's council Coop is absolutely delightful, and sir Stewart, Lorna, Delaney and the butler all have their moments. Delaney's sister's husband does a decent job acting, even if a lot of his dialogue is too awful to redeem.
The melodrama and ridiculousness of much that happens is of truly unforgivable proportions: Delaney's sister keeps pretending that she can act or is needed in the plot in any amount; the entire segment in the mother's room is stupid, boring, poorly-acted, continuity-lacking, ahistorical, disgusting etc; and while we're at it, it is in fact much of the dialogue that feels way too modern, and moreso completely stupid and pointless. If they cut 50% of it and instead just had Coop talk to people, especially sir Stewart (additionally making it at least remotely clear to the audience, what exactly is that conflict about India; and more broadly what is the state of the world, politics and plot-relevant legislation, or what the plans of the relevant parties are at this stage in the "plot") it would've been a much more enjoyable and watchable experience.