Internet Download and Upload Speeds Not Close to Plan

Hello,

My issue is that my internet download and upload speeds are nowhere near what my plan states. Below is a screenshot of my current internet plan. I've reset my router many times (I have an ARRIS SBG10 router) and have run internet speed tests; they average around 150 Mbps - 170 Mbps download and 0.5 Mbps - 1.5 Mbps upload on a CAT6 Ethernet cable.