While using the Criticals,
I've seen that due to whatever circumstances, sometimes the "Full Jump" option doesn't work well. This happens especially, when the player tries to rapidly attack an entity or in a hurry. Sometimes while strafing in PvP.
What happens is, the player jumps but there's no Critical damage done to the targeted entity. Which is not expected.
But, using Packets instead of Full Jump always works regardless of the circumstances. Which also solves the problem.
But, it raises obvious suspicion around the player. So,
My suggestion is, add a new option named Packet+Full Jump which will always send critical Packets to the server but meanwhile also do a fake jump automatically.