Substance Stager - Brushed metal on a square box

Hi All

I am just trialling Substance (previously a Keyshot user). One of the things I am struggling to succeed with is Brushed Metal on a 6 sided shape.

Each edge is rounded

For some reason, Stager is putting the brush strokes in the correct direction, but on the rounded edges it is canging the orientation of the brush strokes by 90 degrees which is incorrect.

Do you have any thoughts on how to correct this?

It gives best results using UV projection. I have tried the other two projection types.

Here is a screenshot of the issue.

The green lines show the brush strokes behaving correctly, but the red ones on the radiused edge are incorrect. https://app.screencast.com/1qO5dxDHr6xBK

Any help would be greatly appreciated.

Thanks