For me, it works provided it feeds good data when it starts and never lose lock. If I go inside with GPS on and it looses the lock (for 1/2 hour or more) it goes back to the original behavior minutes if not hours to lock - unless I restart the GPS. Then even without internet it will relock quickly - under 30 seconds.

This is strange because it "sees" the same satellites. At one point it only displays low SN on only a few, then (restart) it quickly goes high on many bars.