Minecraft: How to stop Internet lag?

So by internet lag I mean when I'm playing minecraft hunger games, when I click on a chest nothing happens. I wait usually about 5-10 seconds before something actually appears on my screen but by then the chests are empty and I have nothing. So why doesn't anything come up when I click on these chests and how can I fix it?

Its usually because your internet is slow, but not an internet lag. All you have to do is upgrade your internet with a faster internet.
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