ok. just a little update. i tried all methods. Game is running on 1080 confirm. I tried from High settings to Ultra settings. All options gives me stuttering frames. I have no idea what is going on.
Whereas on Battlefield 1 on ultra settings, game play is smooth on both solo and multiplayer. Even on multiplayer, i can maintain a 60fps in mass battles with no lags.
So i guess the problem is with the game. Shall just wait for updates. COD is suffering the same fate as WD2. Stuttering frames, freezing etc etc.
And it seems to me that nowadays, only EA is serious about making their games playable. The rest are just producing games just for the sake of producing games.