Invizimals 1 & 2....

OK, so a new cfw came out called 6.37 ME (Minimum Edition) and thought I should try it out.... The thing works great with no crashes so far and best of all I can finally use the PSP-450x camera that I bought before Christmas that came with the invizimals game.... I played with the camera for a while and decided to try the game out.... I popped in the UMD and it worked 100%.... the problem came when I got the downloaded the ISO of the first and second game.... The frame rate and sound was so bad it actually froze my psp.... I was wondering if there was a way to fix this?? This isn't the first game that my psp had a problem with and when it occurs I can usually skip the scene but there is no way to do that with these two games.... Any ideas??

Back out to 5.50 GEN-D2 or 3, and use Promethius 4 patch? I am currently running 5.50 GEN-D3 with Promethius 4 patch and I have no issues. Though I am currently onfused as to why I have 2 VSH menus... o_o; but thats probably an error on my part.