Update (1/21/12)
see No. 1 of Issues.
Specifications
CPU: AMD FX-8150 Octal Core @ 3.6GHz
GPU: AMD 6970 2Gb
Mother Board: Asus Corsair Formula V
RAM: Corsair 16GB DDR3 @ 2GHz.
Storage: 256GB SSD used for the game and the OS.
OS: Windows 7 Ultimate 64 bit edition.
Build: 0.75 Beta
Longest Time Between Crash: 10 turns.
Issues
1. Kingdom Screens
After more testing, any of the kingdom screens causes the additional RAM allocation. Its about 1 MB/s allocation until ~930MB where the crash occurs. I have verified this with a new game as well as existing saves.
2. Load/New Game
Fallen Enchantress does not appear to be releasing RAM from a previous session when I attempt to load a game or create a new game from the main menu while in a game. I hope that didn't sound too confusing. I noticed this when I attempted a wolf quest and got attacked twice so i went to load an autosave but the memory usage went up 35%. So some of the memory is being released, but not all.
Verified Non-Issues
These are things I have tested which has no RAM issues.
1. Main Menu/Options
Going to the main menu or options screen causes no RAM issues.