When opening SQL dumps in Sublime Text, the entire editor slows to a crawl. I suspect long lines are the cause and syntax highlighting, but I can't be sure.
Either way, this makes editing such files impossible.
Even if a fix can be found for SQL's syntax highlighters, shouldn't this be fixed on a larger scale avoiding the problem entirely? Each step in the render/update cycle shouldn't take longer than a few ms, and if certain plugins/code violate that, their activity should be aborted. Or something.