Hello Jonathan, thanks for posting.
To be transparent, we do not recommend our USB graphics adapters for use with Mac systems at this time, but we see improvements being made on newer Mac systems. Unfortunately, yours may fall outside of the newer systems running “Metal 2 support” which improves Mac/DisplayLink performance.
With that said, I’ll be happy to investigate as much as we can.
Would you be able to let us know the MacOS version you are running and the version of the DisplayLink drivers you had installed?