This getting anywhere? Following
To b fair both proc and fast are pretty similar — if you’re planning on a bunch of lights though I do believe you need a bunch of light driver boards with proc vs fast which supports 256 addressable leds off the bat. Yes they are serial chained in groups of 64 but I’ve not heard of any issues with them thus far. price comparisons should factor this in.
Either way, both good systems have good support. Gerry is super communicative and helpful at multimorphic and Aaron from fast has priority mailed me a new board hours after I blew it up. Both systems have slack channels with active communities providing advice and support.
Can’t go wrong either way really. Good luck with the project!