To everyone using the plug and play 802.11ac Fenvi card for WiFI and Bluetooth who has been experiencing slow downs, disconnects, etc. with Apple Magic Mouse 2 and the like, I have a suggestion in addition to the previous suggestion to disable the 2.4Ghz Wifi network on your router. Disabling the 2.4 Ghz network helped but didn't solve the problem I was having. What has solved the issue for me is that I uninstalled the Fenvi card and reinstalled it into the PCI slot right next to the Graphics card in PCIe slot 1 instead of in the slot that was next to my quad Sata card at the far other end of the board. Since I've moved the card, I have almost 100% less drop outs and mouse freezes these last few days since. In fact, I am using the antennae that came with the card rather than the extra separate one that I got to try to fix my issue and it's been working extremely well. So you may have to move your card to an alternate position for the issues to dissipate.