Is there any smoother alternative to CFrame:Lerp? (server side)

I've been having a problem with my script that the CFrame animations that it uses always tend to lag and it looks chopped up at times. I've seen other people's scripts where they look much smoother, but I don't know how to make it like that. I'm using RunService.Heartbeat and CFrame:Lerp for my animations, but I don't know if this is the best idea. I'm using the following code below.

local function MoveTabs(plr)
    local tabs = Core.Admins[plr.UserId].Data.Tabs
    local r
    Core.Services["RunService"].Heartbeat:Connect(function()
        local torso = plr.Character:FindFirstChild("HumanoidRootPart")
        if not torso then
            return
        else
            if #tabs ~= 0 then
                r = 3 + #tabs
                local x = 1
                for i = 0, (360/#tabs)*#tabs, (360/#tabs) do
                    if x > #tabs then
                        x = 1
                    end
                    local cf = CFrame.new(torso.Position) * CFrame.new(r * math.cos(math.rad(i)), 0, r * math.sin(math.rad(i)))
                    local newCF = CFrame.new(cf.p, torso.Position)

                    tabs[x].CFrame = tabs[x].CFrame:Lerp(newCF, .05)

                    x = x + 1
                end
            else
                r = 0
            end
        end
    end)
end

I would really appreciate if someone could explain to me a better way to accomplish this, as the bricks involved with this movement tend to look really laggy in larger servers (I'm running it in script builder). Help would be very appreciated, thank you.

[Edit]: I've heard of using TweenService to make smoother animations, but I don't know how that would work especially in a loop like this.