Wanted to add my own experience.
On my desktop, running Antergos, basically Arch Linux, I am also experiencing extremely high CPU usage around DisplayLinkManager.
My setup is, three monitors, primary monitor is plugged directly into my desktop via DVI. Two monitors in portrait mode plugged into Dell D3100 via DVI to HDMI adapters. Displays are rotated via xrandr.
When moving just the mouse on the primary monitor, connected via DVI to the desktop GPU, DisplayLinkManager spikes to around 130%. My desktop is running an i7-2600k 4 cores, 8 threads.
This also occurs when moving windows/mouse on the actual monitors plugged into the display links.
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