Hi!

I have a 4g+ connection because I live in the bush in Australia. My ISP is Optus, one of the larger telco companies here in Aus. I recently got a Yagi antenna because my reception and download speed was abyssmal. One thing I have noticed is sometimes, even know with the antenna my download speed will drop to less than 1mbps and the only solution is to turn off the modem and turn it back on again. 

Can anyone share some more tips with me about why this might happen and how to configure the router better? Optus support us utterly useless