I have been working on this large scale theme park model in maya and the file size is out of control. Originally it was about 2gb in mb format. Then I saved it in .ma format and it jumped to 3.5gb. Then I added just a few bushes and it jumped to 7gb. Then i added nothing and just saved it and now its at 12.5 gb takes 30 min to open and I have the exact same file in 3DS max with bushes and everything else at 2gb. Can someone please help me I have no idea what has happened?