KeepOnMining

If you don't break a block instantly, then there is a 5-tick cooldown between breaking a block and starting to break the next one.
This mod simply makes this cooldown configurable, with the delay being set to 0 by default.
The delay can be changed any time in-game by accessing the mod's config menu.

This mod will do nothing if installed on a dedicated server.

Warning

This is a purely client-side mod, but server software can detect that you're breaking blocks faster than you should be able to.
Only use this mod on servers that explicitly allow it. I am not responsible for any punishments doled out by server admins as a result of using this mod.

Q: Why is this a whole mod / why isn't this just a feature in Train's Tweaks?

A: Firstly, there are already mods which achieve this on Fabric 1.21, but not on NeoForge. Since I want all Train's Tweaks features to work near-identically on both platforms and there's no reason to implement it on Fabric, a new mod for NeoForge is the answer.
Second, since servers may consider this mod cheating, a single mod makes the cause easier to identify.