I gonna speak about my ipac-4 cause thats the one I have and dunno ifs been changed with the new one. But in my IPAC-4 I have to set the jumper to ALT so I can re-program the default values to what I want. Is there a jumper setting on your Ipac-4 ? if so, just make sure its set to ALT so it could be re-program to whatever value you want.
If everything is ok in the IPAC-4, then maybe you need to delete the NVRAM, CFG of the games your having problems with.