The PI gets to 100% but the Naomi only reboots once (then displays "Now Loading") generally around when the percentage is around 5% to 20%, PI still goes onto 100% and goes back to the game list.WHAT HAPPENS ON THE Pi HERE?<<< Whilst the arcade screen is showing Now Loading, does the progress bar on your Pi get to 100% for loading the game? It should get to around 98% and then reboot the naomi again.
I have done checking NetDIMM and RAM tests using the TEST Mode menu, all good there.