Let me qualify my answer with two caveats: I'm a pro with computers (been a developer since '82), and though I've burned CD's for backup for years, the BenQ 1620 is my first DVD burner.
I too have the INFODISC A10 media. Others here have posted that they're junk media, and I haven't the experience to disagree. However, I've used them for test cuts of DVD's, and though they scan a bit like yours, they played in my $28 Cyberhome player, my Zenith and a DaeWoo combo - without a single skip or error (squeezed 3+ hours onto the thing).
Try some +R from Ritek or Optodisc and see if your scans aren't better.
Also, the "T9" firmware is reported to show errors more readily than previous versions (the H9 firmware showed none - it was incapable).
Notice, too, that you have no PO errors - so the data is readable.