Nero reports no media when I insert one of these. If I eject and reinsert 4 or 5 times it sometimes recognizes these discs. In that case I can burn them at 4x and my old Pioneer DVD player plays them perfectly but the 812S won't read them back.
DVD-Rs read/write perfectly. Using latest US0J FW. Tried an older firmware and it still struggles badly to read these +RWs