Help with pixelblaze randomly going dark for 15-20 sec

I recently switched my light installation from 2 WLEDs to 2 pixelblaze v3 standards with expanders (linked over wifi, one is the lead, the other one is connected to it) with 1200 pixels on each. At first everything was working fine, but over time (20-30 hrs) I started having an issue where all the LEDs go dark for roughly 15-20 secs. Then everything goes back to normal. I can’t find a pattern to what causes it to glitch out, my power supplies are pretty beefy (the setup worked fine with 2 WLED controllers), and it seems to happen at random times in the playlist. Now it seems to be happening more often. Would love some advice as to why this can be happening.