skype ndi

I'm Using OBS + NDI (Skype) to live stream with my 3 co-hosts. The issue is that despite I've locked their dimensions (using the lock button from the sources), at times their capture increases or decreases at size. Is there a way to trouble shot this? I'm attaching an example of one of my videos...

Hi all, i have a few guests on my youtube stream that i pull in using the Skype NDI. i sometimes show them on their own and sometimes i would show 3 of us on screen, and switch between. my issue is that as the audio on the skype NDI is for all guest channels together, when i put all guests...