dForce hair looks weird in viewport

ctaco147_214bd9a4

Please help me on this issue.

The hair is dForce Neroli. It looked fine in the begining in the Iray viewport.

I'm not sure what I did. Suddenly, the hair became very thin in the Iray viewport.

I did a little search and followed the recommendation such as turning on Preview PR hair, setting Line Tessellation to 3, etc. No single one helped.

Any advice is highly appreciated.

 

Josh

ctaco147_214bd9a4

I jsut tried other dForce hairs. All have the same issue.

Non-dForce hair works fine.

ctaco147_214bd9a4

I just read a post. It was caued by mesh grabber. The issue is resolved if mesh grabber is deselected.

How stupid I was.