Hi @jbs0311 . A lot of FTTP boxes are placed in the least convenient spot. Did your fibre cable follow the path of the copper telephone cable or did installer take a short cut?
Any possibility of running a CAT6 ethernet cable from NBN box to a more convenient location? Underneath the house or run cable around edge of room to an adjacent room. A wifi extender might help.
When you get connection dropout, is there any change to the lights on NBN box or router?
Does the dropout recover by itself or do you do something?
What model router is it?
Check the router's System Log for messages when you have connection dropout. "PPP" messages indicate a fault on WAN link.
What plan speed are you on? (NBN25, NBN50, ...)
What down and up speeds do you get doing speed test on TPG support page? Does your laptop have ethernet? If not, use the 5GHz band if possible next to router.