Slide Duration is not working

I am not having any luck trying to change the slide duration. It seems to be stuck on about 6 seconds. Changing the value to more or less time does nothing. I have cleared browser cache after making a change to no effect.

[https://mcgrawhouse.org/site_update/]

WordPress v4.7.5
Divi by Elegant Themes v3.0.47
Simple LIghtbox v2.6.0
jQuery v1.12.4
Chrome Browser Version 58.0.3029.110 (64-bit)

Other Plugins installed and active:
Gravity Forms v2.2.3
Link Manager 0.1-beta
@cnymike

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