I have my PC connected to my NAS directly, with only NIC - Cable - NIC, and it helps with large transfers.
But honestly I only did it because I moved my drives from my PC to the NAS, and did not want to downgrade from the SATA SSD speeds.
I started doing that when I bought my first PC, and now I have a career in IT. Hope it’s a pattern and not a fluke!
I transfered about 4TB of data and was annoyed my transferspeeds were not as advertised. I get 10Gbit can be hard to reach depending on system, and this was only mechanical drives, so I had some understanding…but still.
Then I noticed the connection I used was the wrong network, so I used my onboard ethernet instead of my NIC…and my switch was limited to 100mbps bandwidth…
After changing the IP of the network drive it was a big difference
The NAS is still connected to the rest of the network, through the 1Gbps port.