Lite-On 832S doesnt burn at speeds I tell it

I’ve tried different speeds in Nero, Alchohol, and DVD Decrypter. I think it always defaults to 2.4x, I cant get it to do anything higher or lower. I got the new CG5J firmware from here:

I’m using RiData 4x DVD+R’s.

Not sure what could be wrong.

Edit: Forgot to mention its only with DVD-R’s. CD-R’s work fine.

Check you DMA