I just went through your accounts and activity, traffic etc.,
you are on ADSL, over 2.5km from the exchange, your sync speed is 8Mbps, for the distance pretty good sync speed,
But technically you will have an issue if trying to stream two devices at the same time,
also, I can see heavy traffic on your line, seems some streaming devices running, or heavy downloading.
0/19/7 138.1 5619.1(Download)
for your usage, I will highly be recommending switching to NBN 50Mbps plan, which is $69.00
that means your speed go from 8Mbps to 50mbps, and it can handle your traffic easily
also, you will receive TPG dual-band high gain 5G wifi router, suitable for online gamily and 4k streaming, etc.
... View more