Redstone is slower in snapshots 14w25b and a

When I Changed to the latest snapshot (14w25b) I noticed that redstone slows down. I demonstrate this with a redstone clock.
Snapshot 14w25b - http://gyazo.com/825a1cef6659bfc0ab9d9d6b5d15f4e8
1.7.9 - http://gyazo.com/9a6ce6aaf7955afceeac7d66aae0e39f
Notice how much faster 1.7.9 is compared to the snapshot