[BUG] Enters Power-Saving Mode

I couldn't tell you how to reproduce this.

I can leave the game sitting idle for thirty minutes (this is offline) and how no adverse affects. Occassionally though, the game will start to bog, and about two seconds later freeze. This is followed by the screen going black, then the standard message you get when the PC powers down into power-saving mode. I can't exit this without turning off my computer.

It only seems to happen when I'm doing a lot of moving around and jetting.

You could try disabling power saving mode or standby mode. Right click on your desktop and go to the screen saver tab. You should have a button labeled power towards the bottom of that window. Just set everything to "never" I guess. This is assuming you haven't done this already. *shrug*