I recently bought a powerline adapter, the TP-LINK TL-PA4010KIT AV500 Nano Powerline Adapter, to be exact. But can't get more than 2MBps while downloading anything, whether it be on Steam or just generally in Google Chrome's browser. Even when I'm not doing anything else that takes internet, I can only get 1.8MBps at the max. I know about cable noise and making sure they are on the same side of the breaker box, but I don't know much about anything like that so I don't know what to do here. Please give me some information and explain why this is happening.