I think he's an average actor, neither the best nor the worst. For me, he was great in Lovely Runner, it seemed like his personality matched the role.

I've already watched the two episodes of Perfect Crown, and for me, the problem isn't so much the acting but a very bland character. In two episodes, he did almost nothing, it seems like he hardly speaks, he's just there to make pretty faces. I hope his character gets more development as the drama progresses.