Emulator

Game Name: Tales of Symphonia
Game ID: (I have no idea)

The problem:
The game runs absolutely perfectly on both high and low quality. Perfectly being with no lagg, sound crashes or frame skips. Yet after playing a little while the game crashes sometimes. Usually the crashes happen when in 'field-mode' (as shown in the screenshot). This mode might be more demanding for the emulator, but it still runs smoothly.
I do notice a small sound change before the crash but its very faint. It's difficult to describe.

I expected the logg to show some kind of error but I only see this sometimes: "Warnig: iCalcStcPnt1 ArgStcPnt 0". The emulator doesn't crash when it prints this message, but it's worth mentioning I suppose.

Version: As shown in the printscreen this was done on version 4.0.
Also I'm using the 64 bit version, which is supported by my PC.

Log Screenshot: http://i.imgur.com/xyD4IcQ.png

I hope this helps!