After 15.0 update battery is terrible and now there's a huge lag to open a menu / settings from the 3'rd party watch face

After 15.0 update battery is terrible  (6% in 3 hours) and now there's a huge lag to open a menu / settings from the 3'rd party watch face (Gearmin), 

If I remember correctly, same issue was 1.5 years ago, now it's again here.