Games go slow mo in big action seens? Is this because it is a burned game?

[soundfx4]

Hi, I never really paid attention to the GD-ROM games, but I have noticed latley that on Record of lodas war, that it goes in slow mo when alot of action is on the screen. Is this because it is a burned game? Or is there another reason? And if it is because its burned, is there anyway to fix it? Thanks