Hebrew + Org Mode Slow

[Mark H. David]

I have a large org mode file. When I move the cursor among text that contains 
Hebrew, it slows down dramatically. Like goes away for 10 seconds or longer. Is 
this a known bug in performance? Anyone know what the heck it's doing that 
slows it down so much? Normally, when I have everything closed except the item 
I'm typing into (typically at the bottom), and it's all in English typically, 
there's no performance issue whatsoever.