How Do Altcoins with Faster Block Times Handle Difficulty Adjustments?

Altcoins with faster block times, such as those with a 15-second or 1-minute target, must implement a more frequent or responsive difficulty adjustment algorithm to maintain stability. They often use algorithms that recalculate difficulty after every block or a very small number of blocks, rather than the 2016-block window used by Bitcoin.

This ensures the network can react quickly to changes in hash rate, preventing extreme block time fluctuations.