[QUOTE=alnaphur;2051972]I got my LiteOn Burner (20A3H) several days ago and scanned some DVDs, especially DL+DVDs! The DL+DVDs (CMC MAG D03), burnt with the mentioned burner are all of surprisingly good quality - maybe too good! They all have a quality score of 95 - is that possible or gives the drive wrong results of DVDs burnt by itself??[/QUOTE]
The best way to check this is to run a scan with a previous version of cd-dvd speed. If results are comparable, then the software is working good 
Another good test is to scan the same discs with a different liteon drive (you can ask a friend if you don’t have it)