Hi. I bought the game 2 weeks ago.
ill tell u my System information.then please tell me wheres the problem?because I have many Lags. All setting are on LOW.all graphic features are OFF.no blur no depth on field nothing.nothing.everything in LOW
my system:

CPU: 2.4GHz
Graphics: Nvidia GTX 630 2Gb
RAM: 8Gb
Space: a lot

I played Advanced warfare without any lags.i played GTA V without any lags. Yes I know witcher is Heavy..but how much heavy?
im running on LOW.all features are OFF.
still LAG!!!!
I even updated the game to 1.6...no changes!!! Plz help me

OK; so, straighten this up for us:

Are you talking about The Witcher 3: Wild Hunt? Because this subforum is for The Witcher Enhanced Edition. I'm asking this because you said you know the game is "heavy", and the first game in the series shouldn't be that demanding. Also, you mentioned having installed a patch (and I assume 1.6 is actually 1.06, right?), and The Witcher EE already comes with all the patches available, The Witcher 3 is the only game in the series CD Project RED still releases patches for.

I'd strongly advise you to move your question to the official Witcher 3 subforum, as most people in this one don't even own The Witcher 3; maybe folk over there can help you better than us.