Why is Nimbus re-rendering note when screen orientation changes?

Why is Nimbus re-rendering note when screen orientation changes?

Android version:
Why is Nimbus re-rendering note when screen orientation changes?
It takes 2-3 seconds to open the note with ONE WORD (even if note is already loaded before) and again it needs 2-3 sec to re-render it when screen orientation changes and this is frustrating.
It seems that this rendering is also the reason for slow opening of notes even those that are already loaded previously.

Web version
I dont know if it is the same issue but NB needs 2-3 seconds to open a note that contains ONE WORD ONLY! That is even if note is already loaded a minute before.

Nimbus is slow in web and android versions, at least for me!
Evernote is faster opening long note that is opened for the first time then Nimbus opening previously loaded note with one word!!

Desktop version
Well, that one is quite ok with speed. But I use web and android.