In AffPub, entering text in a text window linked to an overflow text window is very slow and cumbersome. I understand why this might be the case since the there must be a constant adjustment of the text on the linked window. In the meantime I compose text in a single, unlinked text window. When one would link additional text window I imagine the problem is work, but I have not tried this. Since I'm working on a fast iMac and only have a small AffPub doc running, I believe that this needs attention. As yet I have not yet found a setting that would correct this.