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Precisely what particular Firmware is presently installed in your DVR-212D?
What is the MID (Manufacture ID and Media Code) (Example: TYG02) of the particular Media you are attempting to Burn at 16x speed? To obtain the MID (Manufacture ID and Media Code) of this Media suggest using the DVDInfo (http://www.dvdinfopro.com) software utuitly program.
When you provide the MID (Manufacture ID and Media Code) (Example: TYG02) of the particular questionable Media Forum Members will then be able to check the Media table of the particular Firmware presently installed in your DVR-212D and see what burning speed are supported for this particular Media.
Just because DVD Media states it is 16x speed Media doesnâ€™t always mean that the DVR-212D will Burn Media at 16x speed. It could be possible Pioneer during testing determined the particular Media produced questionable Burn results at 16x speed and limited the Burning speed to 12x speed.