android - Low performance maybe related with images -

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i don't know happened, developed simple memory game uses imageviews, @ point ok in performance terms, after exported , signed, game looks laggy in xperia sola, takes long press buttons when open game, after 3-4 buttons pressed go normal performance, issues aren't noticeable on better devices (xperia sp or lg optimus g testing examples). but, fact have not changed nothing on code either before or after last testings (when game ok), made changes on images, used picture editor remove imperfections on images , more polished, of course game size increased (from 826kb 1.85mb after edit) , nothing else.

i'd show code long. maybe can me identify issue?


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