WS281X vs APA106

I have been using Wled for about a month now, fiddling around with presets and segments for my 17X30 pixel matrix, and it works pretty good on a small prototype i’m working on.
Those LEDs are a common addressable 5V LED strip, but when connecting to my 2.5 meter tall LEDWALL, only a few diodes lights up when using Wled, while the rest flicker with random colors.

I have been trying to change the LED chip setting several times, but my experience is that the APA106 has a different update frequency than the WS2812-led strip. I’ve noticed this when using arduino to control the animation in the video.

Any tips on how to fix this?