USB connectivity on TB15 dock is intermittent and other issues

I recently got the TB15 dock with the 180W power supply and there seems to be a lot of issues USB connectivity and some other minor issues when used with a XPS 13 9350.

I have noticed the following:

• Every 60 seconds or so any keyboard and mouse plugged into the dock lose connectivity, one right after
  • It does not matter which port they are plugged into 
  • I've tried several keyboards and mice that are known to work perfectly when plugged directly into the laptop 
• On arriving at the Windows 10 login screen, sometimes either the mouse or keyboard is not recognized
• Several USB thumb drives seem to work fine.  More testing is needed with USB HDDs
• Single HDMI connection to a 3440x1440@50Hz monitor works fine
• Single DisplayPort connect to 3440x1440@60Hz monitor works fine
• When using headphones on the front port, there is noticeable echo/delay

Before using the dock I had made sure to :

• Update XPS 13 to have the latest BIOS listed on the support site (v 1.2.3)
• Verify all other drivers were installed and up to date
• Install all the drivers listed under "docks/stands" on the support page
  • Made sure to update the Thunderbolt firmware and install the Thunderbolt Controller Driver before the others in the list
  • Verified in Device Manger the correct version of the drivers were installed.

Video, Ethernet and Power of the TB3 connection to the laptop all seem to work fine.  As a work around (hopefully temporary), I am using a USB 3.0 hub plugged directly into the laptop so I can use a mouse and keyboard while docked.

Any help in this matter would be greatly appreciated.