Good answers
Two issues are the time to do it and the fact that two camera shooting
may limit the wall space for treatment
Years ago I recorded a lot of scenes in and old house with picture rails
om the wall about 6 feet from the floor.
I bought furni-pads and had rings attached to an upper edges, then
I bought old style picture hooks that the pads were then attached to
hung from the picture rail
Quick, light and easily moved to the next room location!
mike