I have two soon to be retired Pioneer DVR-111s with version 8.29 Firmware and both of these DVD Burners burn Taiyo Yuden and Verbatim 16x speed Media flawlessly. My two Pioneer DVR-111s will be replaced with a flawlessly functioning Pioneer DVR-112D v1.24 and a DVR-115D v1.06.
I also have a now â€œretiredâ€ Pioneer DVR-110D v1.41 which prior to retirement burned Taiyo Yuden DVD-R TYG03, DVD+R YUDEN000T03 and Verbatim DVD+R MCC004 Media at 16x speed without any problems.
In short both the Pioneer DVR-110D and DVR-111 burn Taiyo Yuden and Verbatim Media at 16x speed without any problems.
It should be noted if you review the CD Freaks Pioneer Forum postings you would find that my experience with the Pioneer DVR-110 and DVR-111 DVD Burner is typical of the performance of these Model Numbers.
It appears that you have either user error, hardware configuration, and/or use of poor quality Media problem affecting the Pioneer DVR-110/DVR-111 performance. Until you provide hard factual verifiable information the cause of your actual problem is only open to conjecture.