Slow download speed from IIS

Hi,

Hi am trying to troubleshoot "slow" files download from IIS server. I am testing locally connected to 2.5 gbit switch from my laptop. 

I have two virtual machines, same hardware, one running nginx, other IIS running on server 2022. Servers are connected through 10 gbit uplinks to network.  I don't have any scanning, qos rules, etc. Just plain rule to perform test. Same testing machine, same switch port, same browser.

I generated/uploaded 40GB.zip files to both servers.

When I download from server running nginx download speed is around 230 MB per sec

When I download from server running IIS download speed is around 25 MB per sec

Is the anything I can do to make downloads faster from IIS?

Thank you.

Carlo