Thanks. I had a few cable modems in the last few years. I am using the same cable, the same settings on the R600 router. With all previous modems I was getting speed 100+ mbps from R600 router. This...

Model : Hardware Version : Firmware Version : ISP : For years I had the same configuration: cable modem going to TL-R600VPN and to computers on my network. The download/upload speed (per Speedtest)...