FPP v1.5 can only run 128k, but v1.6 should support 512k. I don't want to go higher than that until I get around to writing the code to only read the channels necessary and skip the rest. 512k is 10 megabytes per second at 50ms timing, so I want to only read the channels being used locally to cut down on the amount if data that needs to be read per second