Extract this directory to your \Program Files\THQ\S.T.A.L.K.E.R. - Shadow of Chernobyl\  root directory, if you don't have a gamedata folder this will create one for you.  Overwrite any files if applicable.

These scripts disable the prefetching of objects and models, effectively speeding up load times and reducing RAM usage.
Please refer to the thread at http://z4.invisionfree.com/Chernobyl_Reborn/index.php?showtopic=57 and post your results.

You can also email me at emoaddict15@gmail.com

Have fun!