Weird. Sorry for doubting the drive. I must always remember that media is variable.
Not this one. It's DVD writer - DH20-A3H.
Oh, yeahâ€¦that's one of the drives from the time period where LiteOn actively produced test firmwares for public trials. On only a couple of drives did they address CD-R/RW performance (the DH20A4 drives, and maybe the 16x SHW/SHM-16**6S drives), with the rest mostly focused on DVD writing quality. No one ever said if the test firmware for the DH20A3 series ever enhanced CD-RW writing, though I think people were OK with the CD writing quality (jitter with A3 drives was apparently acceptable).