Hello excuse for my english (I'm french) I just finished the installation. My config is: Raspberry Pi 3b+ RASPBIAN Latest Hyperion and Hypercon APA102, 5m, 60 leds/m 10A/50W PSU: UTV007 splitter is AV Receiver (rxa850) When I test the different colours, I have no problem. Some LEDs flicker with grey_3F3F3F and grey_7F7F7F all the rest works super well. I tried to change many parameters without success such as: horizontal and vertical gap, frame and size decimation, baud rate, RGB order. I made a short video to better understand Do you have any ideas? Thanks in advance, C.