I did receive a call from Dell tech support and they directed me to the following site: downloadcenter.intel.com/Detail_Desc.aspx. He instructed me to download and install the 15.1.1 driver and software. It is the "S" version. I told him that I already had that version installed and he stated that the software was also required as it had been modified to ensure correct settings on the wireless card. He also said that I would need to remove or roll back the 15.1.1 driver that was already installed.
The installation was uneventful and my connection appears stable. Although it will take more evaluation to determine how well this set up is, one positve thing I noticed immediately is that I have full bars on my connection icon for the first time at approximately 40' from my router. Previously it was two to three bars.
I will continue updates over the next couple of days.