[Orgmode] org-mode is slow :(

[Piter_]

Hi all.
I use org-mode to organize and process my experimental data. By now my
org file has 5000 lines with a lot of python and matlab code. I
started to fill that org-mode becomes slower. I have to wait for
characters to appear while typing and so on.  Can anybody reccomend a
way to speed it up?
Thanks.
Petro
P.S. I have installed the org mode from GIT: "make && make doc && make install"
I guess it is bytecompiled already.