Yeelight Light strip is slow on yeelight app

I noticed that the lightstrip takes 2 seconds on average to turn on/off in the Yeelight app, but takes only 0.50 seconds on average to turn on/off in the Mi Home app. Why is that? Also changing colours took 2.57 seconds in Yeelight app, but in the Mi home app it took less than 0.15 seconds to change colour. This is a huge difference. Is this a bug or what?