I am replying to update my own post.
With the help of an Adroid forum, I have been troubleshooting this issue, without resolution. I have used both Wi-Fi & ethenet connections in two locations (I don't have cellular here), deleted & reestablished my device connection to my network, tried device storage versus SD card, cleaned the SD's connections, tried two different ethernet cables in two locations.
I did a test download of photos from both Dropbox & GDrive, 50 photos downloaded in about 2 minutes. This only happens on my Galaxy Note 8 phone and only within the LrM app.