Poor SMB performance
I know there are several posts on here about this, and a few appear to have solutions, but none of those apply to my situation. I used to be able to max my 1Gbps network connection when copying from my Windows 10 machine over SMB to unRAID. It would max out at ~ 110MB/s. Now it will max at a consistent half of that - about 52MB/s. I don't know when it first happened, but I'm guessing it's been slow for about 6 months or so.
Don't want to spam this thread with screenshots (so I've add
I don't believe that the number of retries is of concern when the network is being saturated. 1Gb/s can max out at about 80,00+ packets per second and the network was minimally in use elsewhere; skpe, online gaming etc (which would have prioritised packets).
I'll subsitiute a segment of the network with a long cable which will byass a couple of switches, but because there's a 50% drop in throughput I don't have much hope for that.
Just to add, iPerf shows that the network