Hi There,
Any light to shed on this> https://share.pingplotter.com/7ykNvedFqgh would be helpful. When MacOS (10.11.6) computer on GigE network is plugged directly to modem/router (SmartRG , Gentek with latest firmware) to ISP download and upload are consistent between 25Mbs Down and 7Mbs down. When network switch is plugged into Modem/Router download lags between 600Bps and 4Mbs down and 1.2Mbs and 4.5Mbs up. No idea what is going on, on the network. This issue just seemed to spontaneously start about a month ago. ISP will not do anything as they say speed is consistent from Router/Modem to first hop so not their issue. Great tool BY THE WAY! If I can get a handle on interpreting results will definitely purchase and recommend!