Using /give and /enchant commands causes lag spikes

Every single time I join my world and start making some kits for pvp I use /give and /enchant commands. For some reason the first time I use those commands It creates sirius lag spikes.

Steps to reproduce:
1 start a brand new world on creative mode
2 start using /give or /enchant commands on something
3 you will notice It only creates lag spikes the first time those commands are used