Traeger claims a max swing of +/- 15º..From the few bits of information I have seen it seems as if their claim is valid...The big question is, has anyone done a cooking grate temperature test relative to the controller display??? A few different tests should be
done just to be sure the results are comparable.
Why this may prove to be interesting is that some of the more advanced controllers, pid or3 term, tend to show a more blended display as well as doing an excellent job of controlling temperatures.