RDPSCAN never finishes

[XiQshoner]

I am running a scan across 12717 IP addresses in my environment. Unfortunately, the scan never seems to finish the entire list of IP's.
I have let it go over night and still nothing. It chokes out around 10000 results.
I am running this on Windows 10 1809. I received the list of IP's from doing a masscan to all private IP space.

The output of my command are:

rdpscan.exe --file scanresults.txt --workers 10000 > results5.csv

During the scan i get some results into the CLI window that look like this:

[ ] [10.1.x.x]:3389 - SSL_read: 5 (A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
)
[ ] [10.x.x.x]:3389 - SSL_read: 5 (An existing connection was forcibly closed by the remote host.)

However, I don't think these are the issue, as it just never closes the window or completes the scan.