It's... hard to describe how I felt on it, honestly. There was only ONE section of the game that I felt was absolutely awful and it's the upper-mid section of the outside part of the Twin Dragon's Tower. That was literally the ONLY place I legit had issues because of technical reasons. The frame rate literally dropped to the point the game slowed down (guessing 10-15 range?). I had to go back there to get some items I missed and holy hell was that bad.
Curiously enough, the one end game boss that would choke the PS4 and Xbox One's, curiously was fine on the Switch. I'm guessing the effect was already simplified so there was no issues, but that caught me off guard. Was expecting the Switch to absolutely have a meltdown when it used that attack and it... didn't.
Having said that, most of the issues were visual faults or just issues that were present on the other versions (bookshelf and crafting crashes). The only real annoyance was the minor control lag, which I know they're working to fix, but it never really negatively impacted me (played w/ joycons, docked, w/ a capture card that has some minor lag, plus a TV that introduces more lag on top of that, so it's doable, just not optimal). Think it only made doing one or two jumps awkward, but that was about it. Still, it's at least being fixed.
One thing I do hope they can kinda sort out (graphical glitches and what I mentioned above aside) is the transitional load time between two rooms, which are both annoyingly where you have to jump into. My only guess is the only way they could partially fix it is by unloading and streaming in assets in the room prior to it, and then finishing loading once you get into the room, but that's just a guess on my part. Still annoying that they happened to be in the worst possible area that could cause the problem.
With all that said and done... I finished it and enjoyed it more than I hated the experience. But yeah, there's issues that absolutely need to be addressed.