Why does my server's memory run out so soon

My game consists of 37k parts; which is quite a lot. However, I’ve seen games with double the part count not have this issue. Any ways I can find the cause of this?

http://wiki.roblox.com/index.php?title=Memory_Management
http://wiki.roblox.com/index.php?title=Memory_Analyzer

You might be facing a memory leak. Do you have any scripts that could cause this?

I don’t think I am facing a memory leak, because the memory is not increasing overtime. Most of my memory is used up by Physics part.

Do you have any moving parts or parts that are not anchored? You should double check that everything that should is anchored. Can you provide an image of the memory breakdown?

Does your game have very large, but flat parts? For example 1000x0.2x1000?

Vast majority of my parts are anchored about 99%, but I do have a lot of parts that are 2000x10x2000