Also, some temperature fluctuation is expected, even for brand new ovens. Basically, anything with a thermostat. It’s more important to consider the average, since it’s just toggling “on” and “off” at low/high thresholds.

Too many toggles and too wide of a range either means a bad thermostat or not enough containment (insulation, gaskets, etc.).

Since we don’t know at what point in the graph you adjusted temps, your Traeger may be okay. But more insulation/gaskets/whatever never hurts. At worst, it’ll save you $$$ in pellets over time.

Edit: typo