For using the: RGB-Matrix-P3-64x32 by Wavshare with driver chips: FM6047
In order to set up the pi in such a way that the RGB LED matrixes can operate at their rated brightness a init script from the screen manuafacturer needs to be ran. A guide on how to is on the following webpage: https://www.waveshare.com/wiki/RGB--Matrix-P3-64x32-Reginit