i use 1024 a6281 + same

i use 1024 a6281 + same number rgb leds for my prototype
I Experienced problem with EMI.
i can play movie until first switch in house i used, then whole matrix gone
totaly messed until power off and power on +pole on on whole matrix board (onli for a6281 supply not logic)
Now question is, how is possible that this chip can not exit from messed stage with fresh data feed only with re-powering

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