rax50

I get a video delayed from audio, then crashes, worked For about a week, and then problems started again, same problems I had when I first installed it, and I was having it on my previous Netgear Wi-Fi, probably after updating Mac OS software, and I don’t know how to fix it I’m at a loss, please help!! Modem works fine by itself, unfortunately there is me and my wife both use the Wi-Fi, I’m tempted to say screw net gear and get a new one that’s not netgear!!!