Only Lightning/Dots effects not working properly

[aadrian335]

I'm having a strange issue where all the effects work fine except for Lightning and Dots. I'm running five 150-pixel strips in a straight line, all power injected in the middles/ends. Everything works EXCEPT for Lightning/Dots -- both of these effects only work for the first 1 and a half of strips (the rest of the LEDs are dark after that).

Any ideas of what could be going wrong here? Thanks in advance.