Issues since recent MB8600 firmware upgrade
Long story as short as possible, modem is MB8600 with 8600-19.3.15 firmware, router is Orbi RBK753 with V22.214.171.124 firmware. All was good until modem firmware was updated. Download speed has gone from 1.4 tb average to 500mb. I have defaulted both router and modem, turned off LAG on modem, to no avail. I called Comcast Tech Support who said issue is with my router. All was ok until modem firmware was upgraded.
I see a lot of errors on 2 channels on modem, all others seem ok. Suggestions please folks ?