Check if they are using any Anti-Virus and add exclusions to the C:\Program Files (x86)\PlanetDDS
Adding Permission
Locate folder C:\Program Files (x86)\PlanetDDS
Right click on PlanetDDS folder, select Properties
Select Security tab, then Edit
Click on the Add button
Type in the box "Everyone" then press OK
Now check the Box Allow for Full Control then press OK
When Voice Commands are not responsive even though Connection is Open
Check the Sound setting and change the Levels to 50. I've notice witch some of the clients if microphone volume is to high it becomes distorted and won't recognized their voice.
Disable all Local Intranet settings under Internet Options
Reseting Chrome Permissions sometimes does the trick to get the Voice Connection to connect and stay open.
Check if they are using any Anti-Virus and add exclusions to the C:\Program Files (x86)\PlanetDDS