I have had an Apple Watch Series 4 (GPS only) for a year now and I just got myself a new Series 5 Stainless Steel. For some reason, this one lags a little more than my Series 4, which is quick as lighting. Not that the Series 5 is slow by any means, mind you, but it does take a half second to load the main app site or the complications/notifications of the Siri watch face: with my Series 4, there was no load time whatsoever. Anyone else experiencing this?