@dt00swc the issue you're talking about, I presume is the problem with strand hair messing up the preview and making it super slow.

It turns out that it's a problem in the dynamic hair library we use. We're waiting on a the developer of that library to fix it. It's not going to be in the next service release. I wish I could say it was fixed.

There are other Mac-only issues in that library and we may end up having to migrate to a different dynamic hair library as we did with the Talk Designer. (Which is an open source library now)

Again sorry for not having a solution yet.