Are you transferring everything over from smart switch or setting up fresh?
While I'm at it, Is there a benefit to setting up fresh and not copying everything over? I'm too picky to let it do that.
Both have their pros and cons. On my last four devices (S8+, Note 8, Note 1+, and S22 Ultra), I started fresh. It took longer, but I had a fresh install of all of my apps and didn't have to worry about corrupted data. It also allows you to decide which apps and data to transfer. You have the opportunity to do a little house keeping.
With my S24 Ultra, I used Smart Switch and it did a very good job. It did a great job moving my accounts (email and social media) and most of my apps, but it wasn't completely without issues though.
Not all of my apps that were installed on my S22 Ultra installed on my S24 Ultra. I had to go through my Google Play and Galaxy Store libraries to install some apps.
Another thing I learned, was that it didn't transfer all of my music from my S22 Ultra over to my S24 Ultra. Nor did it transfer my entire playlists in Samsung Music. I have around 180GB (~48,000 tracks) of music. I am currently copying it over from my master copy. In doing so, I found out the reason why not everything transferred. It seems the file names on some of my music are too long. That caused an error which probably stopped the copy process. Smart Switch didn't return any errors though. Which begs the question, did they actually copy when I copied them to my S22 Ultra?
Smart Switch has improved a lot, but it is still not perfect. Ultimately, you have to determine how much time and effort you are willing to use to transfer all of your stuff.