Summoned Zombies acting weird

Summoned Zombies acting weird - Woman Wearing Make-up and Black Contact Lens

So I'm summoned a spawner via:

/setblock ~ ~1 ~ minecraft:mob_spawner 0 replace {SpawnData:{id:"Zombie",ArmorItems:[{},{},{},{id:skull,Damage:2,Count:1}],Attributes:[{Name:generic.followRange,Base:200}],Silent:1,LeftHanded:1,Team:"Attack",Passengers:[{id:"Squid",Air:9999999,Silent:1,Team:"Attack",ActiveEffects:[{Id:14,Amplifier:0,Duration:199999980,ShowParticles:0b}]}]},SpawnCount:1,SpawnRange:3,RequiredPlayerRange:2000,Delay:1,MinSpawnDelay:1,MaxSpawnDelay:200,MaxNearbyEntities:50}

and they spawn and track me properly, but they move really slow as if they had a potion of slowness. At first I was thinking collisionrule for teams but when I turned it off they were still really slow. Anyone know why? I am doing this in 1.9.2.






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