How do I tween a model?

I have a very large model that I need to tween all at once. I've used model:SetPrimaryPartCFrame inside of a for loop, but it's wayyy too jittery. Is there a way to utilize the tween service to make the movement of it smoother? I've tried some methods such as

local tweenService = game:GetService("TweenService")
local info = TweenInfo.new()

local function tweenModel(model, CF)
    local CFrameValue = Instance.new("CFrameValue")
    CFrameValue.Value = model:GetPrimaryPartCFrame()

    CFrameValue:GetPropertyChangedSignal("Value"):Connect(function()
        model:SetPrimaryPartCFrame(CFrameValue.Value)
    end)

    local tween = tweenService:Create(CFrameValue, info, {Value = CF})
    tween:Play()

    tween.Completed:Connect(function()
        CFrameValue:Destroy()
    end)
end

but it always returns and error with the CFrame value when I do tweenService:Create().

What is the most efficient way to accomplish this?