I suppose you run bit torrent application thru the router. If so, try to reduce the number of connections or disable DHT network at the bit torrent application setting, option or property. However this is temporary avoidance. The router should work without such application concerning, I think. Because of the other manufacture routers do not have this problem.
I’ve waited the firmware update since few months ago. Buff does not provide any information about that.
If you are in harrying, I recommend you think another router with legally proper high gain antenna.