Only teleporting one player out of 12 in-game??

My code is supposed to teleport all players at once into the map but instead is only teleporting one player each with a three second period of time in-between. I've been trying to fix this forever now please help

local rand = math.random(1, #maps) --chooses random map

    local map = maps[rand]:Clone() --clones map
    map.Parent = workspace --places map in workspace (loads map)
    local barrier = map.barrier --find barrier
    local mapname = map.MapName.Value

    status.Value = "Next map : "..mapname --sets status to map name
    wait(4)
    status.Value = "Teleporting players..." --warns players
    wait(2)


    local players = game.Players:GetChildren() --gets all players ingame
    for i = 1,#players do
        players[i].Character.Humanoid.WalkSpeed = 0
        if players[i].Character ~= nil then
            local spawnLocation = math.random(1,#workspace.Teleports:GetChildren()) --finds pos
            players[i].Character:MoveTo(workspace.Teleports:GetChildren()[spawnLocation].Position) --teleports player
            players[i].Character.Parent = workspace.Ingame --sets player to ingame folder
            status.Value = "Get ready!"
            wait(2)
            barrier.CanCollide = false -- open walls
            status.Value = "Go!"
            players[i].Character.Humanoid.WalkSpeed = 16
            wait(1)
        end
    end