I found it linum mode that slows all things down.
Thank you for the help!
Qiang

On Wed, Jun 17, 2015 at 3:51 AM, Nicolas Goaziou <mail@nicolasgoaziou.fr> wrote:
Hello,

Q <godblessfq@gmail.com> writes:

> I am view this file
> http://doc.norang.ca/org-mode.org
>
> It's a prettey long document, when it all folded up, navigating to previous
> line and next line takes about 2 seconds. When the sub heading is shown,
> it's more responsive. Is this a bug?

I don't know. What Org version are you using? Could you use a profiler
and report results?


Regards,

--
Nicolas Goaziou