I'm a professional freelance editor who works with ... let's say "aspiring" authors, with Track Changes dealing literally with several thousand edits over 100k-word manuscripts, and once a certain level of edits is reached, Word starts to freeze, the display turns fragmented mush, things like word or sentence selection is unstable ... generally the app is unusable. It's really frustrating considering I was using Word 2007 and figured it was the responsible thing to do to upgrade.
A Microsoft tech tried to help remotely, suggesting workaround fixes (like tweaking how TC mark-up is displayed), but really I shouldn't have to "work around" anything. It's like Word isn't designed for documents longer than 10k before it begins to flake. That's unacceptable considering that Word processing is relatively easy compared to, say, 3D apps.
Is there any fixes or settings I can try to make Word stable? I've done the graphics fix (which is only in the Outlook settings anyway now).


I'm only assuming it's the high amount of Track Changes data causing the problem, but turning TC off doesn't help once it starts failing — and it's obviously not an option anyway.
Thanks for any help.