I was doing some speed tests on my wife's MacBook Pro (15" 2017). With wifi (802.11ac), I get about 600-800 Mbps downstream using as of yet unreleased access point using VHT160. I have a Satechi USB-C Gigabit Ethernet Adapter plugged into the LG 5K monitor. It's connected via CAT6 cable directly to the master switch that's connected to the router. My iMac gets 940 Mbps downstream when hardwired, but my wife's MBP could only get about 300 Mbps downstream. Waiting to change out the cable (if only it could be that simple), but I'm thinking it's the adapter. Has anyone had any issues with the Satechi adapters or using any adapter connected to the LG 5K?