I used Raise 3D N2 Dual for two years and never have this kind problem.
The layer of the printed part get separated. Compared with regular layer separation problem here is no warp on my parts where the layer get separated. Also, compared with regular layer separation here are lots of print mess from where the layer get separated.
It hard to descript but you can see the different from the picture. I don’t know what detail I should include to help myself make the problem more clear. Please let me know if I can provide more information to find the problem.