The new printer networking UI is really nice.
But, unfortunately (for me) not terribly reliable. The 5.1.2 release, on my first try, the download and monitoring to my Duet Maestro worked great! But never again today. Even after disconnect/connect and restarting S3D. Subsequent file downloads would work about 20% of the time and the device monitoring never worked again. The Duet Web interface had no issues, so I could use that after the print started.
Something is not quite right in that functionality yet.
Robotics and sensors engineer
And lots of other stuff for fun.