The thread I posted about slow speeds has been locked. I had about 500 on my 4k+ and it was suggested that my old OS might be the bottleneck. I bought a new nic for the server that helped a smidge but not much.
Today I finally upgraded the mediaserver to a moders OS and imediatly tested iperf3.
Server to vero4k+ via ethernetcables and a Meraki gigabit switch gives me about 950 both ways.
Basically i want to tell you you were right and I am very happy with this speed. I am a little sad to leave a familiar environment but it was foremost security reasons that made me do it and the extra speed is a nice bonus.