I do have the same problem!
After some testing all Windows versions after and including 1803 are not fully compatible with display link drivers.
I had to restore 1709 version and then situation is much better. Also, I have tried DL 9.1 M1 and DL 8.5.3459.0 on Win10 1709 and both are working fine, reducing WUDFHost and not spinning CPU fan that often.
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