I believe,
Weaver Post and Slider options > Filter > Select Filter > Native Theme support
But if you read the help, it mentions:
“The option to use your theme’s native display will not be included unless the theme has a file called content.php. For themes that have this function (over 50% do), most will display posts from [show_posts] nearly the same as they display standard blog posts. However, some themes will have glitches and not give satisfactory display. You should experiment with that setting to see if you get the results you want.”