When I ssh to my linux server, that's 'CentOS release 6.2 (Final)'.
And use XServer to display sublimetext.
Found that both Sublimetext 2nd and 3rd (beta) render extremely slow under screen size 1024*1080, when typing or scrolling.
After I downscale display window of sublimetext. It rendering normally.
I've also ref these two pages :
http://www.sublimetext.com/forum/viewtopic.php?f=3&t=4117
http://www.sublimetext.com/forum/viewtopic.php?f=3&t=3555&start=20
Still of no use.