[dust2dust]

tomb raider 3 ps1 backup plays fine here on my ps2

i had a imilar problem with either who wants to be millionaire or was it italian job both ps1

it ended up being bad read although clone said it read it correctly

6-7 attempts to get a good working image (read at 1x)
i proved my point i burned 5 disks from the good image everyone booted

cant give u more details as it was a very long time ago
try copying a diff origanal

sorry i never tested any of the non ps2 working backups on a ps1,