Hi there,
In Windows Server 2016, fair share technologies are enabled by default in RDS.
Check this article for the features:
https://support.microsoft.com/en-us/help/4494631/fair-share-technologies-enabled-by-default-in-remote-desktop-services
And here’s a test in this blog may give you some tips on whether setting them on:
https://www.exitthefastlane.com/2018/02/resource-sharing-in-server2016-rdsh.html
Best Regards
Karlie