Recently bought LiteOn SOHW-1213S and successfully flashed to
SOHW-1633S using OmniPatcher with BS0G firmware.
Lately bought one Verbatim 2.4X DVD+R DL disk for 15$, just for fun.
Burned a movie using DVD Decrypter in ISO mode.
It takes 38:55 for 6.95GB.
Here is the KProbe scan and Nero CD-DVD Speed curve.