I also am runing 2.8.5 and have the upload window showing what appears to be repeated uploading being reset over and over and nobody ever gets past 1 or 2%.

Well it certainly appears to be a "display related" issue and here is and easy fix.

Go to tool /options click on the arrow next to Uploads, click on Basic. UNCHECK the box that says "autoclear completed uploads" then click apply and then close the window.

By doing this the upload window showing the progress of the uploads seems prevent resetting the progress bar back to 0% over and over and actually will show the progress of the files being uploaded from your computer.

Give this a try and post back here to let us know your results of your attempted fix.