Repeat crashes when loading in

I’m sad to report I have crashed 6x today, and 7x yesterday, in the span of several hours of play. I have really-added Marathon to Windows Firewall, have repaired steam files twice, and restarted. I was unable to play for more than 20 min at a stretch before giving up. I have above reccomended specs and have followed the usual troubleshooting steps on my modem and router for Destiny previously. What else can I try?