I have multiple devices, I have the latest surface pro so I can't wire that directly, I have my galaxy note 3 and my xbox one I use it on. I also have an HP windows 7 laptop. Wired it still is the same. It reaches max upload but never max download on all devices. This has to be an issue with the internet provided by verizon as it disconnects frequently without any waring or indications shoing that the problem is with wired/wireless or ith the router itself.
It's a constant around 32 mps at random it spikes up to 50 mps sometimes 70 the max i tested seeing so far has been 72mps even with wired connection.