Por qué los formularios hacen que parpadeé la pagina web?

Buenas tardes, no se a que se deba que los formularios que coloque en una pagina de wordpress hagan que la pagina parpadeé muchas veces, y son los formularios ya que probé todo y solo quitando un formulario deja de parpadear la pagina web

This could be due to a conflict with the code in the form and the code in your website, I'm not sure which embed code you're using, but I would recommend to use the iFrame code, here is the guide that will help you to get the iFrame code of your form: Getting-the-form-iFrame-code

Also, if possible, please provide us the link to the website where your form is embedded on, we will be glad to check what may be causing this issue.