Why is my Netflix lagging?

Whenever I press a button on my remote when using Netflix, there is a good 5-10 second delay before Netflix actually responds to the button press. What is the issue?
Update: -It doesn't just happen when loading movies. This also occurs during pausing/resuming, navigating menu/settings, etc.
-This only happens on 1 TV and not my other TV or laptop
-I have restarted the TV multiple times but nothing's worked
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