I think I found the solution!
Right click your Wifi bars in the tray and open Network and Sharing Center --> Click the blue text that has your network name to get to "WiFi Status" --> Click Properties(Bottom Left) --> Configure --> Advanced Tab. Scroll down the list and go to "Bluetooth Collaboration". Change the setting to "Disable".
Then turn Bluetooth Off/on in PC settings.
I am using a Microsoft Sculpt Touch Mouse and Wedge Mobile Keyboard over Bluetooth. The mouse had a quarter second lag that was very irritating, but now it feels perfectly smooth.
Hope this helps.
Worked for me. Thank you!