Joined: Aug 2009
Posts: 6,746
Likes: 5,366
From: Minneapolis
Bikes: 2022 Salsa Beargrease Carbon Deore 11, 2020 Salsa Warbird GRX 600, 2020 Canyon Ultimate CF SLX disc 9.0 Di2, 2020 Catrike Eola, 2016 Masi cxgr, 2011, Felt F3 Ltd, 2010 Trek 2.1, 2009 KHS Flite 220
Why shut it off mid-ride? The power savings are negligible and then it has to relocate satellites when you turn it back on.
The difference you see is surprisingly large, but probably is owing in part to the pre-stop readings coming from the barometer and the post-stop readings beginning at whatever elevation it gets from its new satellite read.