Happens to me everywhere

The good-ish news. My NAT type went strict with port forwarding (?!?!?!) so I took that off and put it in the DMZ. Open NAT Type, finally. Still having Destiny issues, though. No other game affected. FIFA 21, Battlefield 1, both worked fine. I'd turned the system off and shut off the power strip numerous times, cleared cache, all of it. Microsoft support fellow (very nice guy, very helpful as we tried to brainstorm together) had me do one more cache clear and..... suddenly it worked! For a few hours, anyway, then I got kicked again. Constantly returning to orbit. Went away for an hour..... then played a few MORE hours successfully lol. It's very hit and miss. I've loaded into empty worlds, had reconnecting errors, been dropped from fireteams, dropped into orbit, stuff failing midway through after working, random successes. It's been very strange. I'm hopeful that last night's run was a sign that this is mostly over.