Slow burning with NEC 6500A dvd burner

I have a 8X DL NEC DVD+RW ND-6500A dvd burner. For some reason the burner is only reading at less than 2x speed. How do I get to it read at 8x which it is suppose to be reading at?

Thanks for help


your thread title says slow burning but your post says slow reading which is it?

if its slow reading/ripping of retail dvds then youll need to use hacked firmware to increase that.