I didn't notice anything game-breaking at all with framerate stuff. Think I saw it a couple of times but I grew up in an n64 era where games often dropped to 20fps, so it really doesn't bother me if a game stutters for 3 seconds and is then back to normal. It happened so rarely that I barely even noticed it.
I personally found the puzzle elements really satisfying. I LOVED the open world of BOTW. I know someone up there ^ said it felt empty, but adversely I thought the open space lent great dynamics to the game. It's the whole loud/quiet thing you find in music. The quietness only makes the LOUD even more immersive. I found myself wondering around BOTW peacefully for ages, dicking around, climbing stuff and then I'd stumble onto some random NPC who'd have a quest to look for a giant horse or some other weird shit like a haunted shop or whatever. I loved it.
I also really enjoyed the mini puzzles of the temples. All 120 of them were fun and the divine beast temples all felt like really clever lateral thinking puzzles. Given the way most play hte game, on the go, a series of short sharp puzzles felt so much more satisfying. I found myself playing the game in two ways:
1) on the go where I'd have a 40 minute bus journey, I'd attempt a shrine or a small side quest or two. Or just poke about a previously discovered town for side quests and NPCs
2) at home id have it on the big screen and attempt something a little meatier, like a divine beast or discover a new town.
I sometimes did 2 during scenario 1 as well.
It's a genuinely fantastic game that suits just about any playing style and has something for everyone. Was gutted to finish it.