yes, I have had untold problems with Wordpress since their update to "blocks", and most of the pages will not now render properly. A major rewrite is needed. I will dig it out and post tomorrow as I think that the one linked above was for ws2811 rather than the apa102. This change was needed because of the refresh rate issue. But in principle its easy to change things out. Also, there was a need, I think to change the buffer size.