Problems - CryEgine

When I went into game mode in CryEngine my model starting freezing so then i imported my model back in as separated components instead of groups within components. It doesn't seem to freeze as much anymore.   

Another problem I have had quiet frequently is the saving of my CryEngine file. Every time i log back onto the same computer i used every time it seems to disappear. So i have to export my model back into CryEngine from the beginning again. To help stop this from happening every time i decided to save the whole file onto my hard drive and when i log back into my computer i transfer the file from my hard dive back onto the computer file in the H drive.