The free router given ASUS RTN15 and now Belkin N+ F5D8235.
Both router facing same issue, even tho MR engineer reconfigured the Asus router when he was here.
If you are also experienced the same download speed of around 8.8Mbps via direct connection to the ONT, then your ASUS router should not be the cause.
Most likely you have to call MR Hotline for assistance.