Our church has a mix of Shure and older Sennheiser G3 wireless systems. When we added video/computer graphics/etc. to the sound booth a few years ago, we found that the G3's were affected by HDMI (splitters). Using HDMI would blow thru the squelch and make horrendous noise.
Well, we were able to fix all that by increasing the squelch and adding ferrite to all the HDMI cables.
Until this past Sunday. I brought in my laptop to use vMix to stream the service. I used a Magewell USB/HDMI capture device.
All of a sudden....BOOM! Noise thru the system....popping...crackling. Found it was coming thru the G3 for mic #2. Not using it that morning so turned it off and problem solved. Whew!
The Shures? Quiet as a church mouse.
Thanks for listening to my rant. Have a blessed day.