Metal Slug 3,4,5,X for DC

Hi,

I have got Metal Slug 1 & 2 working on the DC, through NeoGeoCd.

However, I cannot get the other version of metal slug to work:

MSlug5 is very laggy, even when i use Neo4All, or when i convert to AES and use AES4all.

Anyone got mslug3-5 working on the DC properly?

Cheers,

Anton