A quick test result in this:

Great plane of home - realy.

1. The v-0.4 reduce the delay from 30" to 19"

I try reduce them more (look next version)

2. In tree view the furniture completely disappear with plugin activated.

Fixed

3.1 I suggest again to split in to different plugins and focus at this moment only on Grouper

Sorry for this, but.. not.
Because i write this plugin only in my free time, and i have no time to observe many version with many build for separated plugins, and, in future, i believe - builds and versions will be some more..

I propose some principles for testers.

It's too seriously way to test my small project. It's must not take so many payloads.

Here I've made on completion of my previous post, this:

forget SH3D clean, simple drawing without my plugin [:)]

And at last: v.0.5