From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Dokos <ndokos@gmail.com>
Subject: Re: Very slow performance in Org-mode on 10k line file?
Date: Wed, 07 Aug 2013 18:22:00 -0400
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John Hendy <jw.hendy@gmail.com> writes:

> ...
> Thanks for any suggestions on improving or tracking down the source.
> In the mean time, I'm going to revert to a few git commits ago and see
> if that does anything for me.
>

That's definitely a good idea: it sounds as if something got worse
suddenly so it may have been a "minor" change.

Before you try going back, can you also try to get a profile of a slow
operation and then repeat the profile on the same operation with the
earlier org?

M-x elp-instrument-package org
M-x elp-reset-all
<run your workload>
M-x elp-results

should be enough as a first approximation.

-- 
Nick