I am working on a training course in proofreading that requires using Adobe Acrobat to edit PDFs. I have downloaded and installed a set of stamps for this purpose. Unfortunately, Acrobat keeps crashing when I try to use the stamps in a document, as well as when I try to add text notes. It will freeze for 2-3 minutes and then start working again. This means it is taking forever to get any work done.
Is there any way I can stop this happening? I'm using Acrobat Reader DC (2017 edition) on Windows 7.