Slow Speeds Through Switch

When I connect directly to the Xfinity modem/gateway (via a 3 foot CAT 6 cable) I get about 945 MBS; OK, good. 

When I connect with the same computer through a Gigabit switch (TL-SG108E, a true duplex Gigabit smart managed switch) I get 92 MBS.

All cables are short CAT 6 cables, the modem has been power cycled. 

I can't figure out why the thru-put of the switch is not better.  I also tried an unmanaged switch with the same results.   Any suggestions would be appreciated.