CCR1036-8g-2S - 1 Gb limitation traffic on 10 Gb port

Hello,

I need your help please. I have a CCR1036-8G-2S router, with the latest RouterOS installed. I am unable to achieve more than 1.2 GBit/s between workstation and the NAS, connected in the same 10 GB port. The stations have public ip address form different classes. The same test with ip address from the same classes and connected to 10 Gb switch achieved 2.5 GBit/s Could you tell me where I’m wrong ? Attached you’ll find a print screen with speed transfer and port status.

Thank you in advance.
mikrotik test.jpg
nexus test.jpg
mikrotik staus.jpg