Not all hyperion leds lighting only 50 will light up

I’m having trouble with the leds ws2801 I have a 5v 10a 50 watt power supply a 5v 8a power supply and a raspberry pi power supply but no matter which power supply I use I cant get more than 50 leds to light up at one time even more strange is 5v 10a and 5v 8a are displaying the under voltage rainbow on top of screen in osmc when the pi power supply doesn’t do this is anybody else having the same trouble lighting up all the leds they need and what is the fix I have even tried power on both ends of the strip but to no avail thanks I followed this guide