Optik tv and Boost 7

I've recently upgraded to wifi booster 7 and 3 gig internet. My wifi speeds are excellent. But now I have found that none of my Wireless optik tv boxes work. I have signal and great connection on them, the program plays for about 10 seconds and then I get the message "tv signal has been lost"

I called into tech support and they tell me my optik tv wirless boxes are not compatible with wifi 7 boosters? I believe this is a bandwidth channel issue as the boxes all worked great on wifi 6 boosters. 

Anyone out there using wireless optik tv boxes and Boost 7?

Wired PVR works perfectly

Netflix, Prime video, VOD all work perfectly on wireless boxes, it's just the tv signal that is an issue for me on Boost 7 wireless connection

Help!