[quote=kyrcy;2115626]Is this a burn or a scan issue? The LITE-ON LH-20A1S produces better disc quality results if the media is burned using the same drive.[/quote] A burn issue.
[quote=Albert;2115630]Like I said, the spikes are just recalibration spikes that only LiteOn drives show in their scans.[/quote] Yes and no.
Yes they are recalibration spikes, but no they are not “just” something that looks bad in LiteOn scans.
Some drives will react very negatively to some of the recalibration spikes created by those NEC 3550/3551/4550/4551 drives - either slowing down during reading or even failing completely during reading.
Depending on which drive you use to read such discs, you may have no problems, some problems, or you may have unusable discs.
My tests with my own drives ended up showing that only when burning at 4x was I certain of getting discs without these recalibration spikes, and 4x burning is too slow even for me.
You can make up your own mind about whether to accept those recalibration spikes or not, but they are not just a figment of the imagination of the scanning drive.