Yes 90mbps Telstra increased the speed to the highest trying to fix the problem.
No internal brick walls & low set house built on slab so can't go under the floor , there is not much room left in the ceiling due to A/C ducting & were we need to go with the cable the roof is covered with solar panels so can't remove tiles to get through there . We did not have a problem with WIFI before the NBN , Telstra has increased our speed to the fastest speed & when it works it is very good & fast. but most mornings we have no internet or home phone from around 4.30am through to about 8am.then after that we have Netflix working but can't use the computer until around 9.30am . The Netflix in the bedroom is non existent . I will just have to bite the bullet & get someone in to run the cables. I had spoke to Telstra about running fibre optic in our house from the start & they told me it would not be needed.
To add to this about 10years ago we were talked into going to cable internet from that moment on we hade no internet for 6 months until the ombudsman told Telstra to reconnect us to ADSL , we did not have any internet problems from then until we connected to the NBN. So same cable coming in from the fibre same socket on the wall.
Our security cameras work on WIFI with out any problems sending images through the brick walls from out side , even the one in the garage which is remote from the house sends a clear image . We are also on our 3rd modem , Telstra just keep sending us them telling us , THIS WILL FIX IT. I believe it is a NBN problem due to the fact we had exactly the same problem with cable.

