I wanted to replace my incandescent kitchen light fixture with an LED fixture. I bought this dimmable one:

www.amazon.com/dp/B088CX2QZD/r..._encoding=UTF8&psc=1

It was said to have a CRI of 90. The Wikipedia article about CRI:

https://en.m.wikipedia.org/wiki/High-CRI_LED_lighting

My guess as to how a high CRI is achieved: The early LED fixtures produced only three narrow band colors: red, green, and blue. I suspect that high CRI LED light sources produce five or more colors.

My 4 year old home is full of can lights. The builder grade flourescent bulbs began burning out at the 6 month mark, and I've been replacing them with LEDs. Every room that I use the can lights (e.g. kitchen, hallway, home office, etc) is now 100% LED, and the flourescent are mainly in rooms with both can lights and ceiling fan light (mainly use this or lamps).

I've been buying 90+ CRI, 2700k LEDs from Costco. It's a really nice light color, and I like that there is instant light unlike the flourescents they replaced. It seems to be a truer color light than the warm white flourescents they replaced so perhaps this is the 90+ CRI.

I bought into the hype that bathrooms benefit from 5000k. They're the the 90+ CRI Cree bulbs from HD. I hate these bulbs so I'm betting my issue is the 5000k color not the CRI.