In Slash’s Biography, he says that the 3 second delay is a direct result of Guns n Roses getting an award they weren’t expecting at a televised event.They were massively drunk, and cursed up a storm when accepting the award.
The 3 seconds is necessary (aside from all the technical reasons) as it gives the production people time to bleep out the slurs.
It sounds like a good reason, but Slash’s biography is my only reference for it, so I’m not sure how true it is.
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