RAX80 time sync with NTP server and gaming

Same thing started happening to me this last week on my r7000.  Approximately every 2 hours I get a NTP sync followed by disconnect, followed by reconnect in the router logs.  I also have my router reports ddos attacks at the same time on occasion.  I thought I had the issue resolved because some of the ddos attacks were directed at my NAS, and turning off UPnP resolved that issue.  However I am still getting the NTP sync and disconnect almost every 2 hours on the dot.  I had my ISP come out and check things out a few days ago while getting a second DSL line installed and they don't see the disconnects on their side and the DSL light on the modem stays solid.  They swapped my old DSL modem that was PPoE for a newer modem that uses DHCP. Issue still persists.  I had a second DSL line connected for my wife to work at home which is using an old apple airport extreme AC router and its solid.  Have not had a drop with it in the 3 days since it was it was connected.  the r7000 drops out for approximately 1 minute every 2 hours and comes back online.  I was on an older firmare, but updated last night to the most recent firmware and the issue persists.  I think this is Netgear issue.  Hopefully they can get it figured out.