Aximmetry has some output problems


I use Aximmetry DE professional version output signal by Aja Corvvid 44.When I choose output format 1080 50p the scene and anchor looks nice.But the same scene,output 1080 50i the scene and anchor looks have some sawtooth or ripple.Is there any parameter can I ajust to avoid this problem?       50p        50i

By the way,I wanna know that how to setup make Aximmetry output key and fill signals?