Windows can automatically reduce the network bandwidth on some specific process, which is not supported for RAVENNA.
The RAVENNA ASIO installer should turn off this option automatically, but if for any reason this option has been turned on, you may disable Network Throttling on your system.
Download the file DisableNetworkThrottling.zip
Then un-zip and launch the .reg file. (you may need to right click on the .reg file and select Run As Administrator)
Restart your computer after applying the patch.