Just got my MacBook Pro 2016 today. Plugged in Samsung T3 SSD drive and was surprised by extremely slow transfer speed, around 30 MB/s. The T3 is connected using the USB-C cable that came with the Mac (the one that is used for charging). The Samsung T3 SSD works just fine on another MacBook Pro 2012, showing 400+ MB/s speeds. Any suggestions what could be causing such extremely slow read/write to external SSD on a brand new Mac?