It's one thing to accept that the characters themselves try to sound educated thus they sound retarded but overall it all comes across as pretentious and annoying.
I understand what you mean in the case of someone like Radovid, as his accent does conflict a little with proper pronounciation, but if you've ever seen Sharpe as in the clip I posted he through the series gets made up to be an officer and begins trying to speak properly and it does sound pretentious though it suits his development. In the case of Radovid and others in the game though I think it's because if he spoke in a broad accent, he would be unintelligable.
Radovid:- Reet Gerald' yev to go t' pub t'find owt if the blind bitch is knocking about. If folk ill be like cagey and shite, then break ther bleedin' neck, that owl bint owes me for t'pint and a pie.
The others like Phili and Yen who talk "posh," are pretty accurate to many people who I've met who speak that way, in what I would call a university/student accent and yes they do sound pretentious, but it does suit the character of sorcresses as they are trying to pretend they are better than they are and from the aristoricracy, rather than the bastard daughter of a miner and a barmaid.
In Britain we still discriminate based upon accents, somebody with a broad Lancastrian/Yorkshire/Black Country accent is seen as dense, honest and humerous, no matter how they look or dress or how much intelligence they have. Cockneys are seen as liars/wideboys, the West country jovial inbreeders, Highland Scots and parts of Ireland as romantic/poetic/lyrical drunks, People from Edinburgh as single malt sophisticates, those from Glasgow drink turps and fight their wives/ children and neighbours for sport.
Basically what I'm getting at is for a character to have a specific accent it is shorthand to prejudice them, so those RP accents shared by Ciri and the sorcresses seem pretentious and a facade because they are.
