Clear Command Block Lag in One Command

summon FallingSand ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:FallingSand,Block:redstone_block,Time:1,Passengers:[{id:FallingSand,Block:activator_rail,Time:1,Passengers:[{id:MinecartCommandBlock,Command:gamerule commandBlockOutput false},{id:MinecartCommandBlock,Command:" /gamerule doMobSpawning false"},{id:MinecartCommandBlock,Command:" /kill @e[type=Pig]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Cow]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Chicken]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Squid]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Item]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Zombie]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Skeleton]"},{id:MinecartCommandBlock,Command:" /kill @e[type=EntityHorse]"},{id:MinecartCommandBlock,Command:" /kill @e[type=MinecartChest]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Villager]"},{id:MinecartCommandBlock,Command:" /kill @e[type=SnowMan]"},{id:MinecartCommandBlock,Command:" /kill @e[type=MushroomCow]"},{id:MinecartCommandBlock,Command:" /kill @e[type=LavaSlime]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Enderman]"},{id:MinecartCommandBlock,Command:" /kill @e[type=CaveSpider]"},{id:MinecartCommandBlock,Command:" /kill @e[type=VillagerGolem]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Endermite]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Creeper]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Rabbit]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Witch]"},{id:MinecartCommandBlock,Command:" /kill @e[type=PolarBear]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Ozelot]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Slime]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Bat]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Blaze]"},{id:MinecartCommandBlock,Command:" /kill @e[type=PigZombie]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Spider]"},{id:MinecartCommandBlock,Command:" /kill @e[type=Sheep]"},{id:MinecartCommandBlock,Command:setblock ~4 ~-2 ~ chain_command_block 5 replace {auto:1,Command:"/fill ~ ~ ~ ~-1 ~ ~ air"}},{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~ repeating_command_block 5 replace {auto:1,Command:"/kill @e[type=!Player]"}},{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 replace {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block},{id:MinecartCommandBlock,Command:kill @e[type=MinecartCommandBlock,r=1]}]}]}]}