It isn't only happening to me. I'm seeing many players DC during the PQ. It usually only effects one person and they'll crash out almost every round. Its happened to me as well many times. Never had Royals crash a single time before this update or outside of APQ. Doesn't effect me every session.
two people in my pt nonstop dcing in apq today, this is getting really frustrating. seems to just effect random people since last update.
Are you running on a specific channel each time? Are they disconnecting to login screen or game closes? Is it when going through portals? Any igns?