They've messed this up big time intentionally to kill fibre because australia can't have nice things. Meanwhile murdoch is still losing money, his plan just made things worse for himself.
They do not intend to upgrade to Docsis 3.1 on HFC. They used up most of their money buying the HFC which goes down when it rains mind you. They are paying some american company on top to maintain it and from reports saying to upgrade to Docsis 3.0 when we already have it lol what ?
Your reports about bad signal for fixed wireless LTE is not surprising i'm afraid. FIBRE is the only way.