Thank you for your recommendation to have the option to completely disable the 2.4 GHz band, we will forward your feedback to the proper resources for consideration.
Regarding the stability of the connection when using 802.11ac, there are many factors that may affect this, and some configurations you can apply to prevent this. Please review the following as they may help:
- Apply the configuration from the following advisory: What are the Recommended Settings for 802.11n Connectivity?
- The advanced setting U-APSD support should be "Enabled" with most AC Access points, however, if you experience connectivity issues you may try setting it to "disabled"
- Go to the Windows* Power Options - Power plan and make sure the Advanced setting for the Wireless adapter is set to Maximum Performance, when plugged in and on battery.
About Windows 10*, Intel will provide support and drivers for a list of adapters compatible with Windows 10* once this OS version is released. We advise to check Intel Download Center after the release to confirm support and driver availability.