I am testing something today. But it might have been the issue. I was saturating my upload speeds to the cloud drive and everything else became unresponsive. So I have dialed back the how much of the upload bandwidth NetDrive can use. I am currently testing multiple transfers at once and testing how other programs are responding. So far so good. Plex has continued to keep working now.
I think this has been resolved for me. All of my available upload bandwidth was getting used to upload files to my cloud drive by NetDrive so nothing else would function. now that I have restricted ND3 to use only a certain amount of bandwidth things have remained stable. Slower than I like it to be, but it is at least stable and not killing everything else that needs to work on my network.
This is a feature that is currently not being considered. Because NetDrive is just a file system. Transfering file is up to the explorer or application.
I have had to reboot or shut down ND3 and all services and restart to get things working a few times today. It keeps going unresponsive for me. I am in the states. for me to work with you I need to know where you are so I can figure out the time difference and work on this