MNDA BD-R DL 1-6x Speed 50GB Blue Light Printable 10-Pack Cartridge Blank Discs

This discrepancy is an industry standard and normal.

The speed marked on the disc is the theoretical maximum recording speed (e.g., 1-16X means up to 16X speed, not a guaranteed constant speed).

Speeds such as 1-2X, 1-4X, 1-8X, 1-52X are all normal and indicate a range of supported speeds.

Factors affecting recording speed include laser head aging, computer settings, compatibility between burner and disc, and burner support for high speeds.

It is recommended not to record at the highest speed to ensure better recording quality and success rate.