I could get away with 1°. But it still short cycles. House is 2x6 construction and is only 17 yrs old. New windows and updated insulation. Re-did the drywall a few years ago, and put 1/2" up over existing 1/2". That includes all walls and ceilings throughout the entire home. Once heated it stays heated well.
I have 3 stoves in this joint, but only need the Quad and only use Low. The other 2 are "options" that I have.
I like options. I have NEVER ran the Quad and Fahrenheit together. No need, with 2,200 upstairs and 800 sq uninsulated downstairs (the rest of the basement is either finished (bar/pool table room) or my Pellet storage or tool room.
I like to think its a Low heat loss house. I prefer a large swing to keep the stove off for hours. 1° and the stove would cycle about every hour. It stays off for several hours with 4° total (2° each way) .
I still put stuff over the windows, because every little bit counts. Only used 2 ton last year (3 cord of wood/uninsulated basement though).
The way Quads are designed with the thermocouple, they need time off after running. 45 minutes is about the shortest I would want mine to kick back on. The risk of it "thinking" its still hot (t/c over 200° still) is to great inside the firebox. So using a large swing helps with this.
Heat loss is a factor, but even a tight home with a 1° swing is gonna cycle almost every hour. Especially when Winter is upon us. Quads dont do High/Low, so you must either use a large swing or do the 24/7 thing (low and slow).