I am having the same issue. Series 5 Cellular 44mm here. Using the Infograph Modular face with the middle WeatherMate Pro complication....when selecting the complication to review current conditions takes minutes sometimes to load...stuck at Updating Weather....sometimes never updates at all. Then swiping to the hourly forecast takes even longer to load. For me this process has never been fast and over the last year has gotten worse. I emailed WeatherMate support....because it‘s become unusable to get current conditions or hourly forecast as it‘s unreliable as to the speed of the weather update.