I've been reading all the other threads regarding slow typing in InDesign, but I haven't come across any about the problem I am experiencing. My problem is that typing becomes progressively slow when typing in certain text frames, i.e. it is fast when I begin typing in the empty frame, but as the text frame fills with text, it becomes slow.
I am using two types of text frames on each page in my document: one with no styling whatsoever, and the other with an object style including a border, two rounded corners, and margins. This progressively slow typing occurs only in the second type of text frame.
I am typing a relatively small (7MB, less than 300 pages), text-only file with no columns, cross-referencing, pasting from other applications, linking of text frames, or any of the other usual culprits for slow typing that I have been reading about. Nothing else in InDesign is slow, including typing in the other type of text frame (without borders, etc.).
Any ideas?