I got AT&T fiber-optic WiFi a couple days ago, and it’s supposed to be 50mbps down and 25 up. My phone is measuring 60mbps both ways, which is awesome, but my laptop and Xbox One are showing 25/25 and 20/11 respectively. (Xbox is in the next room, but the laptop was two feet from the router.)

What could be causing such massive disparity between these things? Do I need to call AT&T?