I'm almost 100% sure it was by phil galfond. All I remember from the video phil says something like, you have to balance the times you snap call preflop with AA with the times you snap fold them preflop.He also said you should call shoves with AA preflop according to its equity preflop vs someones shoving range
So if someone shoves a range that I have 80% equity against with AA i should fold AA 20% pre.

At first none of this was making sense. But its phil so I trusted it and have been doing it for awhile now. With mixed results at best. Does anyone by chance know which video this one was? Thanks guys.