Note 5 deep sleep issue on lolipop?

Hello. A couple of days ago I rooted my note 5 on marshmallow and my knox is tripped know. I flashed stock rom after some days but now battery drains very fast when the screen is off and android OS drains most of the battery. (I know that deep sleep issue causes this). Anyway, I wanted to know will I see deep sleep issue again if I flash the first version (build) of stock lollipop or this just happens on marshmallow? (Sorry if English speaking is bad). Thank you

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