Benq DW1620 and Datawrite Titanium DVD-R 16X Speed

Hi guys,

When burning with the above discs on the benq burner using dvd decrypter, I only get an average burn of about 3x for the whole disc. The max burn speed is about 6.0x. The discs will reach 8x in my NEC 2510A. Ritek g05 will reach 12x in the Benq burner, so I know that the drive is probably ok. Does anyone know of any issues with these discs and this particular burner.

Any help would be appreciated