Weapons with high enchantment levels can lag the game and crash servers

When killing a mob with the sword provided in the toolbar file below, the game freezes, and every entity except the player stops moving. The player cannot collect the loot or the xp during this lag. This lag can cause servers to run out of time and shut down. 

One exception to this bug is the trident, not causing any lag despite having sharpness, smite, bane, power, and impaling all at level 32767.