Setup :
Workstation
Win 10
Asus strix z270i itx
I7 7700k
16 gb ram
Samsung 970 pro nvme 500gb
Intel x520 dual 10gbe nic
Xpenology
Ds 6.1.7
N54l
8gb ram
Intel xl710 quad 10gbe nic
2x wd green 1tb raid 1
2x intel 120g ssd raid 0
They are connected via a 10gb sfp+ dac twinax cable, and in the same subnet, with ips off my main subne(workinf fine), and synology detects and displays the 10gb Lan info (Lan 2-5).
Problem:
I recently installed the 10gbe nic, and have not yet been able to see 10gb perf. When I do a read from the nas of a 4GB zip file, I start fast (300MB/s off the ssd raid) , but steadily slow down to 70MB/s for the rest of the transfer. I can do a write to the nas ssd raid, and stay around 170 MB/S.
I see the nic gets spikes of activity. I have turned in jumbo frames, disabled interrupt throttling (forger the real name). I disabled firewall, and anti-virus, (I think).
One thing I did NOT do was disable the 1gb Lan on the nas (since I want it connected to the rest of the network. Or edit grub from my original 1x 1gb nic configuration.
Any ideas?