The problem is Adam. That what Bluetooth is supposed to do. Does not work on all computers running Windows 8.x.x. It is more of a hit or miss if it works. What may work on one computer or tablet, may not work on another. Also, not every laptop comes with Bluetooth capability.
As for not pairing two computers. Yes it is slow. It would be like trying to use USB 2.0 for a file transfer.