How quickly does your website load?
Website load times are an important consideration for SEO. The statistics are showing that consistently at least half of the online population are using mobile devices. Google has come up with a great little app that can test your site for specific loading times. Go to https://testmysite.thinkwithgoogle.com. There are many other helpful posts and apps - I suggest WP Engine blog for further information.
This app will tell you how long your website took to load, and what percentage of searchers will not even wait for it to load before bouncing off. I suggest you do this if you have a free website like Weebly.
It is kind of ironic though - we have become so impatient that we can't even wait one minute for a bunch of data to download when once it would have taken a car trip to the library, bookshop museum or cinema.