Upgraded to 400 Mbps, Internet download speed on router is less than 120 Mbps
My internet was upgrade to 400 Mbps. While trouble shooting, if PC is directly connected to the model, the download test got the full speed(bandwidth). However, if PC is connected to Router, the download speed is less than 120 Mbps. (I'm using Spectrum speed test.)
Router has 4 ports. All 4 ports have the similar result ~120 Mbps.
Is there any limitation between the modem and the router? Does really Spectrum support 400 Mbps from the router? Is there any solution for this?