Cheap bulbs do a lot of "CRI hacking": https://www.waveformlighting.com/tech/what-is-cri-r9-and-why-is-it-important https://www.waveformlighting.com/tech/what-

Cheap bulbs do a lot of "CRI hacking": https://www.waveformlighting.com/tech/what-is-cri-r9-and-why-is-it-important https://www.waveformlighting.com/tech/what-is-cri-r9-and-why... It's easy to make a bulb that scores higher than 80 - still, they usually have poor R9 (red reference light source) scores, which is noticeable.