I use a Samsung 24X Lightscribe SATA burner with 16X Lightscribe Verbatim media. Some games, it would work at 16X speed. On some other games though, I would either get an immediate DRE or while the game is loading. I've started to switch to 4X burn, and it seems to be more reliable.
I still wonder if maybe one wiikey wire is loose or whatnot cuz a GC homebrew game burned with TY 4X media gave me a DRE yesterday.