So I have the replacement modem up and running and I did switch the query frequency from aggressive to normal. Some people say not to change it, however other Comcast users have reported normal working better for them. Normally when I fire up a game and ps4 party chat within a min it drops. I was bale to play for an hour with no issues, I'm not sure if it was the modem replacement or query change that did, but I'm gone test it more as is to see if it's resolved