FCP text rendering

So I had a problem with text making my video choppy with black frames. I found out that removing "frame blending" help fixed the problem. The only problem I have left is that when adding the text, it creates one second with a black background before the video track underneath begins.

The clip is only 5 seconds, and one second with a black background is very noticeable. And if I remove the text, the video remains with the black second, and I have to undo everything. Or, export the clip as mov, and then import it to add the text.

So what is the setting/config to fix this???

thanks