Unmanaged network switch is Linksys SE3008 8-Port that is connected to a Netgear Orbi RBR20 which only has two ports (1 WAN and 1 LAN). The WAN is connected to the modem obviously, but the 1 LAN port is connected to the network switch for additional needed ports.
Everything works great until the switchport that the moca adapter is in keeps dropping to only Fast Ethernet at 100mbps. If I take the ethernet cable out (the one that is connected to the GoCoax) and put it back in, I am getting 936mbps on average from a computer connected to the switch by CAT6 and around 600mbps over WiFi by the Orbi Satellite RBS20. It keeps dropping the speeds and I don't understand why. The only solution I can think of is getting a new router that has more than 2 ports on it so I can bypass the network switch and connect the GoCoax adapter directly to the router. I am also thinking that a managed switch could fix the problem if I command the one specific port to only work at a specific bandwidth.
I have tried switching out coaxial cables and ethernet cables thinking that was my issue, but to no avail. I at first thought that maybe the switchport went bad and tried a different one, but same issue, so then I also tried switching out my network switch (I bought a new one thinking my old one crapped out on me, but still same issue). I would ideally like to fix this without any additional purchases, but if it can't be helped then so be it.