The brand of DVD may be the culprit. From my experience (and from posts by others), it seems that many brands are rather bad. Verbatim has a good reputation and I have had good luck with that manufacturer.

What, exactly, are you using?

Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365