MacBook Pro 2021 M1 Denon Prime 4 Sequoia 15.3 Thinking of moving from Serato as there are many features that I like, but came up against an issue when trying it out tonight… I have enabled the crossfader fx as the mixing between songs whilst changing vocal and tempo is so good. This is where I …

It seems you’ve answered your own question. If you’ve engaged the effect and then completed the crossfade - turn off the effect. Engage it again when you next need it.