most of the time. I have had a few instances where even though I left the tractor sitting outside with a clear view of the sky, when I turned it on in the AM, it said fast restart failed and then I've had to wait for convergence. Also, if you duck behind trees or another obstruction and lose convergence, you'll normally be moving when that happens, so fast restart won't help a bit. If you park your machine in the shed, you'll wait for convergence. I have one fuel tank that sits close to a bunch of big trees. When I run my tractor up to the tank, the trees block signal and I don't get it back until I move away from the trees and there goes convergence.