Apparently the issue with Kutools slowing down Outlook has been known for over a year and affecting Kutools as far back as version 10. When it worked it made my job so much easier. With it slowing and stalling Outlook, it's jut not worth the time sucking hassle. The latest version has all the same time sucking issues, plus a new one. When you click the rename button to try to rename an attachment a window pops up that says "Please select an attachment firstly." I had already selected the item!. You cannot use that button to rename an attachment you have to use the other button, the Rename All button. Now that's just stupid!
I cannot honestly recommend this product to anyone. Save yourself a headache until they fix the bugs don't pay for it.