okay found a fix with the help of another blender channel
what they said:
-Yes, this is a bug with dyntopo. It can be replicated by overlapping geometry and inflating it.
– To solve this do a VDB remesh at 1/(sculpting resolution *2) and you will lose no details, but it may take a while depending on resolution.
-If your silhouette is looking good, I suggest using multi resolution instead of dyntopo. After the VDB remesh, quad remesh and add a multi res modifier. Multi res is more performant and easily bakes displacement maps.
Tried this and worked 🙂
hope this helpes others too
