door wont work normal how make it work less edgy?

in youtube tutorials you can find how make door and model with same things in model but in youtube door rotating same in real but door model that i download is moving very edgy

local Can = true
local Open = false

script.Parent.Event.OnServerEvent:connect(function(Player)
    local Mag = (script.Parent.Center.Position-Player.Character.HumanoidRootPart.Position).magnitude
    if Mag <= script.Parent.Range.Value then
        if Can then
            Can = false
            if Open == false then
                local finish = script.Parent.PrimaryPart.CFrame*CFrame.Angles(0,math.rad(90),0)
                for i = 0,1,.1 do
                    local cfm = script.Parent.PrimaryPart.CFrame:lerp(finish,i)
                    script.Parent:SetPrimaryPartCFrame(cfm)
                    wait()
                end
                Open = true
            else
                Open = false
                local finish = script.Parent.PrimaryPart.CFrame*CFrame.Angles(0,-math.rad(90),0)
                for i = 0,1,.1 do
                    local cfm = script.Parent.PrimaryPart.CFrame:lerp(finish,i)
                    script.Parent:SetPrimaryPartCFrame(cfm)
                    wait()
                end
            end
            Can = true
        end
    end
end)