Turns out, an "optimization" I made in the desert in the middle of the night in a dust storm dropped the Cuddlefish's LED controllers from 50 fps to 25 fps. Good thing I'm re-testing this stuff, and in a place with such luxuries as "running water" and "walls" to boot!
(It was a scheduling conflict between two realtime tasks, one of which does a big SPI transfer without yielding or using DMA because I was in a hurry. They clashed just enough that I dropped every other frame.)
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