Just posting here in cases someone else has the same issue.
My new buds will crackle in soft songs but if you go to developer options > bluetooth audio codes > SBC it removes all crackling.
Samsung please fix this bug, I have had 3 buds and they have all done this. It's a very poor experience to spend 20 minutes troubleshooting and fixing my new buds.
I have used apple airpods and they are flawless out of the box.