This mod adds 3 new gamerules, all have a minimum value of 1 and a maximum of 100
Mob AI Tick Speed (mobAItickRateMultiplier)
-This gamerule speeds up the tick rate of mob AI

(Here, this skeleton's attack cooldown is halved due to its AI ticking twice as fast)
Mob Movement Speed Multiplier (mobMoveSpeedMultiplier)
-This gamerule speeds up mob movement speed in general

(Here, this zombie is moving twice as fast)
Mob Action Speed Multiplier (mobActionSpeedMultiplier)
-This gamerule speeds up mob actions such as using items and attacking

(Here, this creeper exploded twice as fast)

(Here, this pillager charges its crossbow twice as fast)