> 2/ Note that on one PC the position of the three windows ..
Not sure why different PCs behave differently, but if you are able to find the delta that causes it we’d be interested in knowing in order to repro.
> 3/ .. I’m stuck at 86% at launch ..
If you could post logs (or an insights trace using command line) we could take a look. Let us know if you need help with this.
> .. “nDisplay Launcher” ..
It was originally made for local launches only, not for installations. e.g. for profiling performance before deployment, and also internally used for QA and debugging purposes. The official nDisplay launcher is Switchboard.