How are you copying the files? How are you measuring? What are the files, are they the same files used in your other tests, or are they differant?
How are you measuring? Like the little status box thing when you copy a file in Explorer?
I’m not sure what you mean by AND here vs OR above. Can you clarify?
What are your client mount options?
Are these on the same host as the TrueNAS, or are they going out to the switch and into another Proxmox system? In either case, it would be helpful to see a physical and logical diagram of the connected systems, switches, etc.
You don’t mention iPerf between your desktop and the TrueNAS. Iperf is available on the TrueNAS if you didnt already know. Can you test this?
If you have the time… This will give us a more accurate idea of what LOCAL pool performance looks like, which will prove beyond a reasonable doubt that the bottleneck is in the network/environment/protocol or not.