Unfortunately, Dotrice's recordings of the later books diverge so significantly from the first set that it's almost worse than a different person altogether. Character voices are drastically different, names are pronounced differently, etc.
This is true. He was quite along in age by that point and was clearly having trouble. I'm sure it didn't help that he recorded A Feast for Crows at the same time as A Dance With Dragons and was probably pretty tired. I believe he set a world record for those sessions.
Still, even in his advanced age by that point he was better than John Lee, in my opinion.
