Example

Two parts same motion, one streamed.

part	how it moves
without_nerp	the server sets it's CFrame at 20Hz and replication does the rest
with_nerp	thee server sends a timestamped CFrame on a UnreliableReemoteEvent at 20Hz, nerp interpolates on the client

Both parts are anchored, an unanchored part is owned by physics on the client and the write gets deleted.

Server part

local now = Workspace:GetServerTimeNow()
local cf = CFrame.new(Vector3.new(math.cos(angle) * RADIUS, 6, math.sin(angle) * RADIUS))

withoutNerp.CFrame = cf
remote:FireAllClients(now, cf)

Client part

local store = Nerp.new(20, "LOW_LATENCY") -- OR "SMOOTH"
store:track(withNerp)
store:start()

remote.OnClientEvent:Connect(function(t, ct)
    store:feed(withNerp:GetFullName(), { { t = t, ct = ct } })
end)

The ID has to match, track keeys on GetFullName() so a feed that sends part.Name is ignored.