For context, here’s a Reddit post introducing these LEDs. In short, this is an attempt by Cree to improve the efficacy of high CRI LEDs by adding red spikes in the spectrum rather than a continuous transition from orange-red to deep red.
Yesterday I got some high CRI Feit Electric light bulbs from Costco. They have adjustable CCT by a physical switched marked with 2700K, 3000K, 4000K, 5000K, and 6500K, done by CCT mixing between a 2700K and 6500K channel. The 6500K is absolutely excellent, Nichia R9080 level, but the 2700K looked a bit off on dark red objects, compared to my 519A. A look through the spectroscope revealed some sharp red spikes, which immediately reminded me of the spectrum in the datasheet, overlaid with my spectroscope photo for comparison. Apologies in advance for the garbage phone camera.
Both the general color rendering and the rendering of dark red objects is noticeably inferior to that of the Nichia 519A. The tint is excessively pink/beige and distorts the perception of colors.