We didn't stop playing after 2-0. With max after 2 0 we would try to play possession football and defend deep, and try to counterattack. Even if Sasuolo would manage to bag a goal, by the 60th minute they would start to tire and we would maintain our result or score another.
With sarri after 2 0, we still press high up the pitch, without the personnel to do so(only Bentacur and somewhat berna) can do this.
So after they started to play possession football, we began to run like headless chicken on the pitch, chasing the ball without the need to do so(we had 2 0), tiring, conceding 3 and only coming back in the game after some fresh legs entered the pitch.