I did do calibration of dimmer quite a few times. Sometimes it works fine but other times its flickers. It's kind of unpredictable. But it does flicker eventually.

I have installed SImpleLED dimmable 9W potlight with Kasa smart Dimmer. When its on 100% capacity, its runs without any issue.But whenever i try to dim it to 50% or 25%, My Polights flickers a lot....