My tablet running the Windows 8.1 worked fast and recently heats up and the system becomes slow. In the task manager, I notice that the “Windows Wireless LAN 802.11 Extensibility Framework” causes high CPU usage (nearly 50% of processing power) and the fan keeps running. The issue often occurs and it seems to be no way to reduce it, even I disconnect the WiFi and change to the wired ethernet network.
The “Windows Wireless LAN 802.11 Extensibility Framework” process is a part of the wireless network adapter’s drivers and provides an interface to Windows wireless security and connectivity features. Try updating the WiFi/NAT drivers and installing all the latest Windows updates are not working. That takes up from 20% to 50% of the CPU processor and makes the device hot and idle.
There is not any paths from Microsoft for that since now, but you could try the temporary method below to fix the issues.
1. From your desktop, right-click the network icon on the right side of the taskbar and select “Open Network and Sharing Center”.
Click “Change adapter setting” link, right-click the network adapter, and click “Disable” from the menu.
2. Open task manager, locate the “Windows Wireless LAN 802.11 Extensibility Framework” process and terminate it.
3. Now go back to the Network Connections, and re-enable the adapter. Then everything should be normal.