Audio skip in dvd decrypter backed-up game. Please help

[onelargeprawn]

I am running Windows XP and SP1. I am using DVD Decrypter 3.5.30 in "ISO - Read" mode to make a backup of one of my PS2 games to the hard drive. This works with no problem. Then I use "ISO - Write" mode to burn this image to a Verbatim 4.7 GB DVD+R at 1x speed. My dvd writer is a Lite-On SOHW-1633S. The burn is successful, but when I use Swap Magic 3.6 plus, and load the newly backed-up game, there are audio skips in the beginning logo sequence, and during the game, whenever there is any dialogue.

* Is there something I am doing wrong in the above process that is resulting in this audio skip problem?
* Would the speed at which the game is copied to the hard disk be a factor?
* When I select 1x as the burning speed in DVD Decrypter and start the burn, I see that in the information section, the write rate is 4.0x. Is this correct - isnt it supposed to be 1x?
* Could the media be faulty?
* Is there better software that I should be using?

Please, any help would be most appreciated.

Thanks in advance,

onelargeprawn