I've never had much of an issue with temperature and reading creep. Not perfect, but at least over the last couple of years (I had many of them fail, but that was several years ago now), the ATC works really well. Actually, have to say, the meter works great, now. Several seconds of reading, then a steady state, then a couple of points up or down, but the steady read is reasonable, given my expected target and what I know I'm doing in the vat.