If you open your page using Chrome or Firefox and check the element inspector (rigth clic > inspect element) and then look in the console tab you will see this
js?sensor=false&ver=4.5.2:92 You have included the Google Maps API multiple times on this page. This may cause unexpected errors.Og @ js?sensor=false&ver=4.5.2:92
https://i1.wp.com/www.gladespring.sechrestmarketing.com/wp-content/uploads/2016/05/IMG_0164.jpg?resize=1140%2C460 Failed to load resource: the server responded with a status of 504 (Gateway Timeout)
https://i1.wp.com/www.gladespring.sechrestmarketing.com/wp-content/uploads/2016/03/20150401_210145-copy.jpg?resize=285%2C160 Failed to load resource: the server responded with a status of 504 (Gateway Timeout)
https://i2.wp.com/www.gladespring.sechrestmarketing.com/wp-content/uploads/2016/03/IMG_0152-copy.jpg?resize=285%2C160 Failed to load resource: the server responded with a status of 504 (Gateway Timeout)
util.js:222 Google Maps API warning: NoApiKeys https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys
util.js:222 Google Maps API warning: SensorNotRequired https://developers.google.com/maps/documentation/javascript/error-messages#sensor-not-required
https://i0.wp.com/www.gladespring.sechrestmarketing.com/wp-content/uploads/2016/03/cropped-gladespringfinalcurved2.png?fit=192%2C192 Failed to load resource: the server responded with a status of 504 (Gateway Timeout)
IMG_0140.jpg:1 GET https://i1.wp.com/www.gladespring.sechrestmarketing.com/wp-content/uploads/2016/03/IMG_0140.jpg?zoom=2&resize=375%2C151 504 (Gateway Timeout)
IMG_0140.jpg:1 GET https://i1.wp.com/www.gladespring.sechrestmarketing.com/wp-content/uploads/2016/03/IMG_0140.jpg?zoom=2&resize=375%2C151 504 (Gateway Timeout)
something is happening that make your images to slow to load , maybe they are too heavy for your slider
also there is this function “resize” that i assume is trying to resize your photos to make them fit better into your page but is taking too much time to do it, so in my opinion the problem its simple “your images are to heavy”.