Dai-2-Ji Super Robot Taisen Z

[-Soel-]

Hello! I'm playing Hakai-Hen with PPSSPP and I noticed a little problem. During certain attack animations, some frames are not displayed and the screen goes black except for the purple bar with the pilot face. Some examples are:
- Getter Beam, when Getter 1 is shooting the beam from its abdomen at the beginning
- ISC Combination, when the VF-25F is spinning and shooting at the beginning
- Dankuuken, when there is the close up on Final Dancougar face in the end
Is it normal? Is there any way to solve this problem?
I'm using 0.9.6 on a Macbook Pro with a Geforce GT 650M GPU.