There definitely were moments where it looked like you were looking at actors on a set. The fidelity was so good that it was obvious the characters were wearing prosthetics and makeup. However there were plenty of scenes where the increased detail and clarity were a huge advantage, especially some of the CGI scenes. The flight of the eagles was gorgeous and the feeling of actually being there you got from the combination of HFR and 3D added a lot to the experience.
It very much is a question of trade-offs. I'm very glad I saw it in HFR 3D because for a lot of the scenes it gives you an experience you couldn't get any other way, but if I were to see it in a cinema again I'd go for 2D, and I look forward to seeing it on TV at home. I'll quite happily watch the next film in HFR 3D.