We have 6 Devices setup, each have 3-5 slides but they use very high amounts of bandwidth from our host each month. What could be the cause of this? And is there anyway we can lower bandwidth usage by using caching plugins?
How much is “high bandwidth”?
Do you have a lot of videos or other large size files?
Are your devices restarting regularly?
I’d advise against caching plugins as those make you unable to update your slides.