Ever since updating to software 5.50 I lose GPS during each and every ride. Most times it takes about 5 minutes to get it back, other times up to 20 minutes. I've tried cycling to other profiles that don't use GPS (like my indoor trainer) and back to that it initiates a satellite search, I've tried holding down the power button until it resets and comes back on. Nothing seems to be the magic fix and after a while it just finds them again. There is no common scenario to each loss, it's happened on the open road with no tree cover on a road ride as well as in the woods on a MTB ride and everything in between.
It's getting very old.. I had very few problems with satellite reception prior to 5.50 on this device