Hi All, at wit's end and need advice please.

ISP: Mercury Energy with FibreMax. 

A few months ago we started experiencing constant router drop off, ie the power icon on the old Netcomm NF10 would turn red with the LAN icon on ONT turned off (all other lights still in solid green). The router would then come back on green after 10-15 seconds and stayed online until the same issue happened for the next 20 minutes to 1 hour...Rang helpdesk over the past months and tried all recommendations to no success. Here are the steps/actions we tried in this order:

 

1. Unplugged both ONT and router from power supply
2. Unplugged our only 1 Netcomm CloudMesh unit and it stayed offline since
3. Swapped the original CAT5e to a new CAT6
4. Mercury sent a new Netcomm NF20 to replace the NF10 stating possible outdated/faulty router
5. Plug n Play NF20, same issue
6. Changed the power plugs of router and ONT to different power points, previously both on a surge protector
7. Chorus came and replaced the ONT unit to Model Type 400, everything was fine for a day or two until same issue happened again

Could this be the router issue? We are just the typical household of 2 adults+2 teenagers with multiple smart devices. Our house is about 180sqm single story weatherboard. If it's a hardware issue I'm considering getting either a Asus RT-AX5400, Netgear RAX50 or TP-Link AX72.

Unsure what to do if it's software issues. Greatly appreciate any help/advice.