Flickering when changing colors

It’s been a few months since i have played around with wled. Anyways me config was working fine before, but now there is flickering when i change colors.

I have a dig quad powering these lights:

https://www.aliexpress.us/item/3256805045342158.html?spm=a2g0o.order_list.order_list_main.11.1ba71802ZjXvZK&gatewayAdapt=glo2usa

I did have to reconfigure the settings, what works best is setting it to SK6812.

I rewired from the dig quad to the lights twice now, and still getting the same issue (but not from the power supply to the dig quad.

Any ideas what this could be from and what i should do next? This is driving me crazy, i have the dig quad mounted in a box so rewiring is a pain…

EDIT: i have two identical strands of these lights, i tried the other strand and it works fine, so i guess it’s the strand itself. Any ideas how to fix this? This sucks… these lights were like $75 a strand…