Hmm, that’s a bummer for both of us.
For the past week I’ve been doing the same, searching for a more specific problem and guessing at various methods to improve, but no luck yet.
Maybe there are simply a few “lemons” on the assembly line, or maybe Comcast is messing with router - I’ve been very happy the past 5 years with Peplink, first with a Surf SOHO HWv2, then a Mk3.
Will chat with support directly soon and let you know if any solutions get helicoptered down! Best wishes during these special days.