Another way is to use the monitor in control panel. Set the ID of the monitor (here 1) to the output of the NDI 5 Watcher. That's it. You can choose the size of the monitor in the control panel as you want. You don't need any extra stage for the preview.

Best regards

Jean-François 

OK, lesson learned - it was a corrupt file at 

/Users/theatre/Library/HTTPStorages/com.troikatronix.isadora

When IT uninstalled and reinstalled Izzy it works on 26.7.1. Live and learn. Thanks all! FAS

I can confirm this bug seems to exist only in the Windows version of Isadora 4.5.1 VST. It does not exist in Isadora 4.5.1 VST for Mac OS.

Jonathan.

@jrhooker

Try putting another camera (any camera) up on the same pipe to see if it has a bouncy image as well.

What is upstairs from you? If it's something like heavy machinery or a dance studio, that could make your ceiling shake.