Default Shield Controller Disconnecting during Emulator Gameplay

After 10 minutes or so of game play using the emulators Mupen 64 plus As or Snes9x ex+, both of my Shield controllers will disconnect from the emulator. They are still fully functional for controlling the tablet however, they need to be reconnected to the emulator. The disconnect has happened on multiple wifi connections.

Is this due to the controller dropping the wifi connection for a split second? Is anyone else experiencing this? Any suggestions for a fix besides using a wired usb otg controller?