Yes, there can still be issues on some Android devices (I'm not yet sure, what the limiting factor is - on the mid-range tablet and phone I used for testing, it runs mostly fine).
Primarily the game was eveloped for desktop systems and optimizing for Android is not quite easy as there are so many different configurations on the market. If you experience performance trouble on mobile, it's probably better to switch to one of the desktop versions.
that is a windows tablet, not android tablet.
This might well be the explanation here. While under Android the game tries to compensate for weaker system specs by reducing graphics quality etc., under Windows it runs at the highest quality setting by default. For a convertible like the Galaxy Book this might be a bit more strain than under a desktop Windows setup. Unfortunately there isn't really a workaround at the moment other than maybe trying one of the lower resolution settings.
thank you for the feedback, Really am looking forward to the full release of this vn. it is really unique and stunning from what i have seen.