Speeding up Teaser Component

I am currently in the process of implementing a rotating banner on the homepage for the site I am working on. I do this by using the teaser component which has 4 segments that it can choose from to display the banner at random, which will eventually be changed to targeting. The only problem is it takes around a second to load after the page has loaded and that is a long time to be without a Hero Image. I was wondering if there was anyway to speed up how the teaser works either by caching or something else. If there isn't then i was wondering if there was a better way to do this. Thank you very much.