Windows keeps losing USB communications

I decided to use my Microsoft Surface (Windows 10 Pro) as a server for a couple other printers (was just serving my Delta).  The other printers are Creality Ender 3 and an Ender 3 Pro.   I am have a great deal of difficulty with the USB communications.  I can connect to the printers during setup and it seems like it all works, but the COMs drop out constantly.   I will have to unplug the USB cable and reconnect to regain the connection in server.   It happens while printing (port busy) and when idle (ports not busy).   I thought maybe it was the USB driver the printers were using.   A while back I had installed the CH340 driver for some Arduino clones and thought maybe it was a rogue driver (the Enders use same COM chip).   I removed the driver and replaced it with the one from Creality.  Appeared to be same driver though and I am having the same results.   Comm drops after a bit.   Not 100% sure of the time interval.   Below is the output from the server console last time it happened on one of the printers.   I left it working at 9:15am.  I believe the last line occurred when I returned home after work and tried to use Server to turn on the extruder heater.  Somewhere in between it must have dis-connected.  Is there a more detailed log some where?   Any idea where to start looking for the problem?  Thanks all!