I am already struggling with speed from my BT home hub.
I am thinking of buying my two sons a laptop each for Christmas, so my question is if all 3 of us are connected at the same time, are my speeds going to suffer even more?
your connection speed will stay the same but it will now now shared between all the devices connected
Although the actual speed of your connection won't change you will notice it is slower on each computer/laptop. This is because at the moment you get all of your internet speed going to one computer. With two laptops the speed has to be split so that all three computers have a connection. If you are already struggling for speed my suggestion would be to look at upgrading, but check with BT to see what speed your line can take, if you're already at the maximum speed then you won't get it any faster than the phoneline can handle 🙂