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The last updated make the movement of screen not soft same before, do you feel same 
"The last updated make the movement of screen not soft same before, do you feel same
"
This update of Build 224 for me saved the day. It's the update with most soft movement on the screen. The animations are much more fluetly than the previous build.
Go to : Settings-->About--->Build Number--> Touch it seven times
then go to: Settins-->Devloper options--> Animationsoptions:
What are they all? The combination should be default: 1x;0,5x;1x.
And something which comes into my mind is, that they changed the default of another setting:
Go to : Settings--> Display--> Image optimization : Change it to "None"
Let's see, if this makes any difference.
Android will be much fluetly, if it's trimming the SD-Card, but I don't know, if Sony actully doing this every time the device restarts. Perhaps the do this everytime, if there is an update. This is something, which will save the device from lagging too. But there's no to do this actually.
Perhaps you should try this too:
Select: Apps (Drawer)-->Up in the search bar click right to options--->Settings--->Effects--->Pane transition
There you could select effect: "Convex".
Perhaps this could help you.