Bluetooth audio lag os x el capitan

After updating from Yosemite to El Capitan the bluetooth head is extremely laggy! The sound is in sync but disappears every now and then and sometimes the bluetooth connection is dropping and tries to reconnect.

When the audio lags, the wifi mouse often lags too.

In some programs, for example Sketchup, you can´t work with it in fullscreen and split screen for it´s suddenly shifts to another window (first desk).

Have tried various solutions but nothing helps?

Trying this forum as a last resort. Then it is back to Yosemite!

Regards /Johan