What are your computer specs? Maybe if we knew what is inside your PC, we could help out a little more.
Looking at the log, I can't tell if the "49% memory in use" is your CPU, or your graphics. Usually programs like to monitor CPU usage, so it could be that. Half of your CPU is being used up just trying to launch the game. Update your graphics drivers or change compatibility for the game. I don't really know, I'm just throwing out possible fixes.
Maybe a developer here knows what's wrong. Usually start up problems have to do with outdated GPU drivers or operating system compatibility. Hopefully someone knows the answer to help you out.