Hi there! I’m trying to set up some ws2812b fairy lights (like these https://aliexpress.com/item/1005005598428130.html).
My setup uses a 5v 20A power supply, with a Wemos D1 mini, and it’s seemingly working correctly, as full white at 100% brightness shows no yellowing towards the end of the strip
I believe my problem comes from effects that have black colors, as seen on the video.
Would this be a hardware issue? It doesn’t sound like anything I’ve seen from other posts or the FAQ
I’m not opposed to doing hardware changes but I want to rule out anything software related before getting at it because this strip is very finicky and annoying to deal with 
Demonstration video: