Game runs slow even with good FPS, help pls

[KazeVongola]

Hey all. I finally got to try "Fragile Dreams" a recent title released by Rising Star and I get decent FPS while playing (25-35 FPS while adventuring, 40 FPS while cut scenes are playing), which should be enough to make the game go smoothly, but the game runs slowly and the sound sometimes gets all crackly, especially while cut scenes are playing (while having 40 FPS may I remind you...). The cut scenes are almost unwatchably slow.
Does anyone have a solution to this problem? Thx in advance.

[System Specs]
Operating System: Windows 7 x86
Video Card: NVIDIA GeForce 9600 GSO
CPU: AMD Phenom 9550 Quad-Core Processor 2.20GHz
RAM: 2GB DDR2

Dolphin version used: r5215, (also tried it with older versions)
Settings used:
- General: Dual-Core, Idle Skiping, HLE the IPL, Jit recompiler, Progressive scan, PAL60;
- Graphics: Open GL (also tried with Direct3D9), XFB, auto scale, force linear filter, safe texture cache, efb to system RAM;
- DSP: DSP-HLE, enabled all, DSound (tried with OpenAL but then the sound started skipping)