Side quests are mostly a waste of time. Weather system is annoying and not explained well at the beginning. Combat encounters are almost never worth fighting if you can run away. I think a lot of the open world aspects are done poorly.

HOWEVER, the puzzles rooms are really fun. The game is gorgeous. The 4 walking temple things are super fun. The climbing and gliding is really fun. I played the game basically non-stop and loved it. It is a very flawed game in a lot of ways but the good is so good it outweighs the bad.