Spell checking too slow on Emacs.app

[Leo]

Hi all,

I wonder if anyone else has complaint regarding ispell.el on OSX. It is
an order of magnitude slower than on GNU/Linux. For example, if you run
ispell-buffer you will see it takes seconds to move from current word to
the next misspelled word while in GNU/Linux it is also instant.

If you have (add-hook 'text-mode-hook 'turn-on-flyspell), then
report-emacs-bug will take about 10 seconds to enter the mail buffer.

My feeling is the communication between emacs on OSX(and possibly
windows) and external tools is extremely slow.

Is there anyone seeing these problems? Any workaround?

Best,
Leo