I gave it a 5 and I think I'm being too generous.
I thought they were following the books in this series? The green council scene was completely butchered and seemed to be essentially glossed over.
Alicent's character makes no sense. She's schizo or something.
The opening scene with the score was overwrought and reminded me of the worst of GoT, though at least the ending of GoT was SUPPOSED to be epic so the score made some sense.
This episode should have been an absolute killer. Instead it was overwrought, tedious, and then veered into sheer ridiculousness.
I owe an apology to D&D. This series is a mess.