I've had this problem since 8.0 so it's not an 8.1 problem. I waited until now to see if 8.1 would fix it. My problem is that every device on my home network gets download speeds in 24-26Mbps range but the Surface Pro caps out at 2-3Mbps. On my work network with a USB Ethernet adapter I reach the network's 5Mbps cap. Any idea why this may be happening?