I haven't seen anything in the previews or trailers to make me think that Felicity Jones did a bad job or is a poor actor.
I think FJ did a lot better performance than Daisy. I watched TFA the night before going to see Rogue One, and I have to say Rey came across a bit... Kirsten Stewart to be honest. I'm hoping that it was due to the director (Natalie Portman was a lot better actor when not being directed by Lucas for instance), but as it currently stands I'd be more keen to see Felicity Jones in future films than Daisy.
