Jitter on object falling down on PC and android both.

I have done everything to fall a gameobject fall from top like Piano Tiles but there is always like little glitch or lag no matter what both on PC and android. I have used all combination like:

1. I used only 2d collider and move object downwards.

2. I used rigid body with iskinematic set to true and interpolate selected.

But it always lag though fps shown on phone is mostly 55 - 57.