I ditched MisFit for LetsMuv, but now only use the pedometer app. I guess when you provide an open code infrastructure, there are many ways to break systems.
I am not saying that MisFit is the cause.. YET.. But its a bit odd that I havn't had a single disconnect in weeks and shortly after enabling MisFit again they started.. It could be a co-incidence for sure.
Right now I am back to where I was a few weeks ago.. With Standby disabled, I havn't had a single disconnect for hours.. When I turn Auto-Standby on, I get occasional disconnects.
So my next test is to disable MisFit and see what happens.