Only just watched the final part last night.
Having read and enjoyed the books more than once, I really enjoyed it, ditto dh, who’d had no idea what to expect.
IMO it was pretty faithful to the novel. I can see that anyone who hadn’t read it could easily think it overdone or exaggerated, but by today’s standards there was a lot of what would be considered outrageous now - and I dare say was when it was first published.
I still remember a particularly outrageous remark in one of NM’s other novels - a relative coming to visit someone who’d just had a baby that had died.
‘Oh, so the poor little baby died, did it? Still, probably just as well, children are such an expense nowadays.’ ?
NM did note appalled shock on the face of a nurse who was present, though.