There is a FCP plug in that’s available that will reduce the polling interval of the RS422 signal from FCP to the deck, which was increased in FCP 5, but causes problems with primarily Panasonic decks.
We have a copy of the file, which was passed to us from AJA, please email me for it.
oh@techsuperpowers.com.
Thanks to Will @ AJA Tech Support for this resolution.