For those who have problems with the elite wireless controller series 2 not automatically...

Problem:

OK here is the problem for me and many people have (elite wireless controller series 2 not automatically reconnect with the last PC/Bluetooth device its paired too and we have to unpair and the connect it again) not sure if what i am posting will work for everyone but works for me.

Solution

1->Download xbox accessories

2-> Connect your controller via USB

3->Click config right under the controller in xbox accessories (after updating and what not if its your first time using xbox accessories) make a new profile top left coneryou can just click default then click back arrow at the top left.

4->click on the new profile you made (on the left) then choose which slot it will take up (drop down menu under the name of profile in the top middle) then click the back arrow so return to the main page of xbox accessories.

5->Disconnect the controller from USB and repair to blue tooth and click the profile buttoninthe middle of the controller to the slot you saved the profile to and that should do it.

not sure if I'm right but it seems that the controller needs to have one of the slots selected to save the information for auto re-connection

and that should do it gonna see if i make a video to prove that it work

:)