AnimationTrack limit of 256 tracks for one Animator exceeded, new animations will not be played. (x1100)

[Quadro_8000 (Mazurka)]

script:
    local ReplicatedStorage = game:GetService("ReplicatedStorage")

    local viewModels = ReplicatedStorage:WaitForChild("fpsViewModels"):GetChildren();

    local cam = workspace.Camera

    local UIS = game:GetService("UserInputService")

    local RunService = game:GetService("RunService")

    local IdleAnimation = Instance.new("Animation")
    IdleAnimation.AnimationId = "rbxassetid://7120507317"

    local currentWeapon
    local currentIndex

    local viewModelHumanoid

    local function Equip(p_int)	
    	viewModels[p_int]:SetPrimaryPartCFrame(cam.CFrame * CFrame.new(0,0,0.5))
    	
    	currentIndex = p_int	
    	currentWeapon = viewModels[currentIndex]
    	
    	viewModelHumanoid = currentWeapon:WaitForChild("Humanoid")
    	
    	local AnimationTrack = viewModelHumanoid:LoadAnimation(IdleAnimation)

    	AnimationTrack:Play()
    	
    	currentWeapon.Parent = workspace
    end

    RunService.RenderStepped:Connect(function()
    	for i = 1,#viewModels do
    		Equip(i)
    	end	
    end)

    UIS.InputBegan:Connect(function(Input)
    	if currentWeapon == workspace then
    		if Input.UserInputType == Enum.UserInputType.MouseButton1 then
    			print("Punching")
    		end
    	end
    end)

[DalekAndrew99]

The function Equip() loads a new animation into your humanoid. You are calling this function hundreds of times per second with this part of the script:

RunService.RenderStepped:Connect(function()
    for i = 1,#viewModels do
    	Equip(i)
   end	
end)

This causes a heavy overload in the animator because tracks are being added faster than they are being removed. I suggest that you don’t use RenderStepped here.
It’s always a good idea to load the animation globally and then play it. You don’t need to load a new one every time you play it.

[VSCPlays]

put local AnimationTrack = viewModelHumanoid:LoadAnimation(IdleAnimation) outside of the function so the error won’t come