Just wanted to make note that since upgrading to the latest 3b2 driver, and the latest Sierra (10.12.3), my DisplayLink adapter is working better than I have ever seen it running (had since Yosemite).
Displaylink usb display:
Product ID: 0x4300
Vendor ID: 0x17e9 (DisplayLink (UK) Ltd.)
Version: 8.14
Serial Number: BOKC360100353
Speed: Up to 480 Mb/sec
Manufacturer: DisplayLink
Location ID: 0x1a124000 / 5
Current Available (mA): 500
Current Required (mA): 500
Extra Operating Current (mA): 0
I am seeing small CPU usage (4-9%) from the DisplayLink process, but I am on an i7 and not really noticing any negatives from it.
Its the first time I have seen smooth rubber banding and scrolling in general through this adapter.