Use this link as a source in OBS or Streamlabs
(Open in a new window)
Widget width: 1950 px
Widget height: 1080 px
A nice template to show curtains on your stream. Adjust these parameters to get best results:
data-hide-time="20000" - when to rise the curtains
data-hide-duration="200000" - speed. More is slower
Remember, that there is an additional reloading timer. Make sure it is set to a period that is more then your settings.