I've been trying to play a pal backup of House of the Dead Overkill, the first level was ok but when I got to the second level the zombies started to skip around, making the game pointless since zombies can't even get to you to attack. I've been searching for a solution and found other people mentioning this problem but I didn't find a way to fix it. Some forums mentioned something about changing the spindown of the HDD but I'm not sure what that means/how to do that.
I'm using a softmodded 4.2 pal black wii, with usbloader gx, and a 250 gb HP Pocket Media Drive HDD