I have an app that's exchanging data with a device using a RFCOMM channel over Bluetooth. I have found that for some reason all devices running Android 4.3 and up have degraded performance and introduce a link lag that's unacceptable (I'm displaying live data from the device).
The Bluetooth connection on Android 4.2 and older is performing fine.
Is there a way to force the device to use the BlueZ stack?