All grills and smokers have temperature swings (pellet and charcoal). If you review any pellet grill community you will see complaints of temperature swings. Do not be alarmed of swings, that is normal. Even ovens have them. What is important is to understand that lesser models, or models hastily built, that don't take care in the electronic temperature control and probes will have very LARGE swings. Large swings are to be avoided by buying a quality pellet grill that has manufactured and invested in the temperature management controls right off the bat as well as the design of the grill. To have to upgrade your temperature system makes no sense.