Try with my hacked build (based on the current revision with the graphics fix by KD) that can load save games, and the included save. It puts you on the world map which seems to hang less easily. I think the lower the frame rate the greater the risk of the game hanging. Totori and Ar Tonelico Qoga run the fastest and they also run the best for me. But if I slow them down by say limiting rpcs3.exe to one core or do some heavy background work they hang pretty much instantly. (Note that they all use the same engine)
Hacked build with a save file: https://mega.nz/#!xt1W2LSA!js98lovxu7nAc...uiYTN46uW8
EDIT: Of course my save is from the English version of the game so it won't work for you... maybe someone else with a very fast CPU will have some luck with it. You can try to find something online or make and decrypt your own if you have a cfw ps3.
Hacked build with a save file: https://mega.nz/#!xt1W2LSA!js98lovxu7nAc...uiYTN46uW8
EDIT: Of course my save is from the English version of the game so it won't work for you... maybe someone else with a very fast CPU will have some luck with it. You can try to find something online or make and decrypt your own if you have a cfw ps3.
Asus N55SF, i7-2670QM (~2,8 ghz under typical load), GeForce GT 555M (only OpenGL)