PLaying DVD backups

[wildthing]

Just recieved copies of Metal Gear Solid 2 & Silent Hill on DVDR.I'm using a NEO4 chipped machine & I've used a PS2 magazine coverdisk as the bootdisk.
MGS2 plays perfectly but on Silent Hill 2 the FMV skips pretty badly.
Ive checked the TOC on all disks & the bootdisk is bigger than MGS2 but smaller than SH2.
Would this be causing the problem with SH2 (I was under the impression that the bootdisk used had to have a bigger TOC than the game for it to even load but the game boots up OK)
These are the first DVDR's I've tried so I'm pretty much puzzled.