I separated the 2 and 5 Ghz on my BT router so that one of my laptops could have a stable connection through 5Ghz. I gave the 5 a new name and unsynced it from the 2. Though this seemed to work in favour of the laptop, my overall internet speed drops to 2.5 Mbps instead of the usual 16+ on both signals. On resetting the signals to default it bounces back to 16. Am I supposed to do anything else besides the above?