ZBrushCentral

What causes this geometry distortion?

I’m not sure what happened, but as you see in the attached video when I dynamesh the model, I get distorted geometry.

[video]https://1drv.ms/v/s!ArgB8yhjOSYJhgX0EKWMs_-e_qax[/video]

I basically used a single decorative model, dynameshed it first, duplicated it many times and used the bend arc tool to create a ring, accept setting.

Later, I performed a mesh integrity test, then dynameshed the whole ring but I get this distortion.