I bought a 2.5 gigabit network card for my PC and it increased the speed by about 20% over the motherboard's gigabit port, but still only getting about 35% (40MB/s) of the router speed. Some of the other hardware must be the bottleneck as I did some tests on my home server which is much newer hardware and I'm getting 110MB/s sustained download to an NVME SSD after a bit of tweaking so I'm pretty happy. Even that is still only about 75% of the speed to the router but I am going through a network switch which may be caushing a slight slow down and also using this motherboard's gigabit port which could be fully saturated at 880Mbps. All new cat6 cabling.
