Mavic 2 Pro 5.8 problem

I get a "radio channel interference " , and "poor’ in the status of my Mavic 2 Pro
when I try to use 5.8 mhm . The 2.4 is fine . On the view status screen on the HD menu the 5.8 doesn’t show any interference but I get “poor” in the upper left status drop down where it shows latest firmware and the the other status items . I can select 5.8 on my Mavic Air and all looks fine .
Any leads or anyone seen this ?