The turn-based combat pace is OK for most of the encounters in BG III, with one notable exception that almost made me lose my mind - the poltergeists in Jannath's house. It is a very unique combat and I can see what Larian was trying to do there, but you'd better have something else to do like maybe folding laundry while those Spirits of Molasses are taking their turns.
I just did that one and I agree that it's annoying.
In general though the advantage of RTwP is that it lets you plow through hordes of mooks. The problem with RTwP is that the devs throw hordes of mooks at you. Turn based does boss fights (and mini-boss fights) better than RTwP.
Honestly, cutting down on the chaf filler fights and leaning into fewer (but more interesting) fights is a good thing IMO.
