@voljega Ok thx you lead me to the solution i modify config.txt with the following

hdmi_drive=2
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=16

and it works!

hi @crackwindobe test this image with gpu nvidia its a image of recalbox with nvidia driver for best compatibilty
https://forum.recalbox.com/topic/15914/recalbox-pc-x86_64-avec-les-drivers-nvidia

Merci pour ces réponses rapides... je m'occupe de transmettre ce fichier archive.

@kelv @paradadf

I can confirm the issue. Tried to play this wonderful game yesterday and the emulator got stuck after 7 min gameplay.

Using the default Megadrive(Genesis) core.

Just playing with this further and I think I've found the trigger - if I go into the main menu -> game settings -> advanced -> Mame and then turn off the rewind option then both Rainbow Islands and Berserk run fine. As soon as I turn that option on then they both bail straight back to the menu after the rom copyright screen.