I recently read some people are confused about the driver versions that appear in Device Manager for this adapter model and the operating system used. Intel® Proset Software packages do not necessarily contain drivers for all combinations of wireless adapters and operating systems. Please refer to the table provided in the article below.
Intel� Wi-Fi Products; Intel� PROSet Wireless Software driver versions by Operating System
An easier way to update will be using the Intel® Driver Update Utility.
I am sorry to know some of you continue to experience issues. Please let us know if you noticed improvements with the latest version (16.6).