S2 loses satellite

I don't see a forum for the S2 so will ask here. My S2 now loses satellite after half a round. Battery power seems fine and when I end round and restart the round it magically finds the satellite again so I usually have to do this 5 or 6 times during a round which makes scoring on my watch impossible. If I don't end the round it will just keep looking for a satellite. I am usually able to go at least 6 or 7 holes before the problem first appears. I have tried soft and hard resets and updated courses. Could it be possible that the battery is the culprit even though it will still last a full round? Any other ideas besides buying a new watch?