Fairly new to Blender, having a confusing problem.
Have added some embossings to this book which was causing me some problems to get to not deform the initial book mesh. Eventually got there with that.
Now when I look at it in the viewport everything is great. When I render out a 360 rotation animation in Eevee everything is great. When I try to render out in cycles I'm getting this odd deformation starting at the third frame. Have checked if everything is unchecked, if textures are the problem etc. Theres not even a mesh line there, very confused.
Any help appreciated. Heres the blender file - https://we.tl/t-UuJ7ov2Lhp