Wither lag issues

The wither has this move which explodes blocks with wither skelly faces and when they hit a block the item drops and there was toooooooo much items on the floor which caused sooooo much lag. Then my minecraft world couldn't take so I got kicked so I tried to find my world on the minecraft world screen and it wasn't there. So please nerf the wither so when it hits a block the item doesn't drop. Thanks for reading.