notmuch-mode very slow in emacs-mac-port (railwaycat)

[Peter Salazar]

I run Emacs on Mac OSX, and I'm trying to switch from Emacs for Mac OSX
<http://emacsformacosx.com/> to Emacs Mac Port
<https://github.com/railwaycat/emacs-mac-port>.

I use (notmuch)[http://notmuchmail.org/emacstips/] for email. It works
perfectly on Emacs for Mac OSX <http://emacsformacosx.com/>.

But on Emacs Mac Port, it's prohibitively slow. Also, the message list is
messed up, double spaced and with strange boxes:

[image: display irregularities]

I'm using the exact same configuration as I do with Emacs for Mac OSX.

Does anyone know what's causing these problems, and how to fix them?

Thank you so much in advance.
BTW, I also posted this on StackExchange:
http://emacs.stackexchange.com/questions/14875/notmuch-mode-very-slow-in-emacs-mac-port-railwaycat
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