Legantmar wrote:it is impossible:
https://github.com/adafruit/Adafruit_Ne ... -427893428
Simple really... Don't use the adafruit library. There are a number of very very good neopixel libraries out there, and some are specifically designed (or have options for) esp8266. For example, many people use fastLed http://fastled.io/docs/3.1/md__r_e_a_d_m_e.html
There are others which I cannot immediately think of, but you can google it. However, fastLed is widely used and respected.