I currently have wifi in my house, but I would like to get the connection into a metal building that is around 40 feet from my router. The plan for the metal building is to use it as a man cave. Therefore the internet speeds would have to be adequate for gaming and streaming movies. There is a window on the metal building that faces towards the house. My original idea was to put a wireless repeater in the window and transmit it into the building that way. However I've heard that using a wireless repeater will greatly decrease the Internet speeds, so it's possible that it wouldn't be fast enough to stream or game. What is the easiest and best way to get the Internet into the metal building?