Help LiteOn 5232KX CD-R C2 peak near end



Hi all, I am using LiteOn 5232KX External drive with Nero OEM bundle… yesterday I bought 10 pack Verbatim (CMC) 52x CD-R and tested a few discs on 32x writing speed…

Then I scaned the disc quality. Most of them had good result (C1 error only) EXCEPT near the end there are crazy piles of C2 error (and quality score suddenly drops from 90s to 0)… Following is a typical scan.

I would appreciate any comments.

P.S. Only one of them was amazing - had only global 200 C1 errors.

Latest firmware updated… and Nero version is