I am not sure what constitutes an upgraded controller. Mine has the one that came with the G30 a couple of years ago. I’ve had it about 6 mos and have just completed my 8th brew with it. It rarely fluctuates more than a degree from target. Reaches 212 like a breeze after slowly ramping to 208 during sparge. Have you checked the settings in the app for your equipment? I saw a place in there where you could adjust standard boil temp if altitude was an issue. Do you adjust flow from the pump so overflow is minimal? The only time I’ve ever gotten a click from my controller was when I started mash and realized I did not have the element switch set to on. When I flipped it to on, there was a click reaction from the controller and it began heating as planned. There are a couple of eccentricities with the GF, ie no handles and that whole cuss fest with inserting the bottom screen, but all things considered, I would rank it up there with the space station and the large hadron collider as one of mankind’s penultimate achievements.
