Hey During a vacation in the states, I bought 2 Apple watches. One 42mm SS for myself and one 38mm sport for my girlfriend. Now about 1 month after the trip, we have some problems with the sport watch. - it is laggy. Loading the home screen or glances , the watch is often lagging a lot. I have not experienced this with the SS version. The sport watch has only the apps it was born with, the SS has installed many 3rd part apps. - Battery issues. Even with a absolute minimum of use (checking the time a couple of times, and receiving som texts, even a couple of hours without wearing the watch), the watch goes dead within 16 -18 hours. The SS version is at 62 % with the same timespan, and a lot heavier use. From what I've read, the watch can be laggy some time, and the 42mm have a mildly bigger battery than the 38mm. But I think it is strange that we are experiencing such big performance differences. Could there be a defect in the sports model I've bought, and should I try to return it for a repair, or is it completely normal?