EndNote 8.1 seriously slow on MacOS 10.13

Well none of my PDFs have annotations. Not a one. And EndNote has many issues with PDFs in general that they consistently blame on Apple but they never move forward with any solution of their own. The OS causes issues with most apps and the developers tend to fix whatever they can if Apple doesn’t have a solution. But EndNote: not so much. Blaming Apple, which has many faults, isn’t helping any of us. Find a workaround. Fix your code. But the solution isn’t to remove a feature (ie, including PDFs in one’s EN library). The solution is to fix the problem, period.