Magic Knight Rayearth (USA) - Stuttering intro

[Kuba-J]

Intro start to heavy stutter around 0:20

https://github.com/MiSTer-devel/Saturn_MiSTer/assets/95412885/d76aefa1-b47d-47b2-b8d5-50e32b213740

core 20240504

for comparison, real hardware

https://www.youtube.com/watch?v=sa4kn2vluuM

[Zet-sensei]

EDIT : Error on my side. I've added the JPN version instead of the US one on my test pool.

[Kuba-J]

No change for me , tested on dualsdram core