Got a 192 and loaded latest version of OSX driver from web site on Mac Book Pro 2008 and OSX 10.10.5.
Noticed that while 890L in AP mode with v1.11 loaded and Smart Connect enabled, the 192 fails to stay connected. Only seems to connect for a short while or sometimes wont connect at all. If i connect to another 2ndary AP, a DIR-615 running N mode only, the 192 remains connected.
Also notice that scanned wifi networks doesn't stable, Sometimes the APs are listed that are mine then next time I scan, they don't appear any longer in the list.
Will be testing on Windows as well.
More testing to come...