EGPU DOES NOT WORK WITH NEW FCPX 10.4 UPDATE

I RECENTLY UPDATED FCPX AND BEFORE THE UPDATE MY EGPU WORKED FINE THEN AFTER THE UPDATE I NOTICED MY RENDERING TIMES WERE SLOWER THEN I USED A APP CALLED ISTATS MENU THAT CHECKS THE USAGE OF MY GPU'S AND WHEN I START RENDERING A VIDEO IT AUTOMATICALLY SWITCHES TO MY INTERNAL GPU..ANY IDEAS OF HOW TO FIX THIS?

THANK YOU