Freezing while highlighting documents

We are having issues highlighting scanned documents, more specifically documents that Adobe does not recognize as text. When freehanding after several marks, the application freezes and becomes unresponsive causing us to close out of the document.

I have the fully updated version of Adobe Acrobat DC and I also have tried to repair the install. We have tested this on multiple machines with multiple documents and the results are the same. This occurs on scanned documents as well as documents that arent scanned.