He is playing well, but it's only his third game. It's not only continuinity. It's the system, the league, the players around him...
He needs space, he didn't have it in Serie A, but does have in EPL. He needs playing time, he mostly didn't have it here, he will have it there. He needs movement from the strikers, and players in the box, he didn't have it here, he will have them there.
He is imo born to play in EPL. Even more than La Liga. Expect more from him in these games, except games vs. the teams in the upper half where the space is much less.