Yes, and yes. Also the RS-485 is hardwired to transmit all the time. its a single-direction bus.
I removed the 18.432 and 14.7456 crystals, and stuck 16Mhz crystals on the Tiles, and that seems to have fixed it for 115,200 baud. My guess is the 0.1% Error on the ATXmega128 was just enough to break the whole system.
I have a total of 21 tiles hooked up.
So now thats fixed, they all change instantly instead of percolating. But, Tile number 13, and 21 dont recieve data. And its an addressing issue, because I can change Tile #1 to address of 13, and 21, it does exactly the same thing. it doesnt get data 90% of the time, every once in awhile it does update.
So, that tells me I have to do some further looking into the code to figure out why those 2 addresses break the program ;-)
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