[DiapDealer]

As I mentioned: the stuttering and freezing I've described (as well as the 8 minute wait for the Preferences dialog to render) are all after the massive merge has been completed and Cod View has reloaded.

I expect a massive merge like that to take some time and resources (and it's not something I'd be doing myself, or recommending to anyone). I'm more concerned with Sigil's erratic behavior when the massive html file is open (and Code View is fully loaded). I realize that editing such a file (especially when Preview is open) is always going to be problematic, but I don't understand the freeze-ups that are happening when navigating Sigil menus (especially trying to launch the Preferences dialog) when no edits are being made and Preview is closed.

I haven't pulled the changes and retested yet, so I'll do that now. Hopefully they will have an effect on the slowdowns and freezing/stuttering I'm referring to.

EDIT: Whoops! Looks like we cross-posted, there. I'll definitely pull the changes and disable the tag highlighting. Spellchecking has been disabled all along.