Bluetooth Issue since fixing wifi

Hey,

So i got a replacement wifi / BT card, this:

http://www.insanelymac.com/forum/uploads/monthly_01_2016/post-200496-0-51007000-1454110318.png

my wifi now works perfectly, but the BT will only just connect. Even now, I have case off my computer and am sat right next to it, I'm getting -90 on my keyboard and -75 on my trackpad! The scores are awful and stop me using the computer properly!

I've bought replacement aerials, no better,
I've checked and swapped the wires on the...

Bluetooth Issue since fixing wifi