Got Spark fibre hooked up during the week on a 100/20 plan.

 

 

Everything appeared to be fine (speedtest.net indicated I was getting exactly what the plan suggested) but today I decided to swap the free Huawei router for an Asus RT-AC68U to give me better wifi coverage near the ONT.

 

 

After a bit of messing about with the VLAN tagging I was eventually up and running. Unfortunately speedtest.net (and Spark's testyourspeed page) both indicate I'm getting ~15-18 Mbps down (while still getting 20 Mbps up).

 

 

Are there any obvious settings I need to check to help diagnose this sudden drop off in download speed?

 

 

Thanks in advance.