This does not sound like a driver problem, but something unstable on the USB bus. When the problem occurs does everything disconnect from the USB bus or is it just the DisplayLink adapters? Does the problem still occur if you connect directly to the Yoga?
Also try connecting the hub using a USB 2.0 cable to see if it is a problem with USB 3.0. This will help diagnose where the USB instability is.
Wim
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