Don't think I will get any help on nvidia forums as it is completely dead. But still thank you for your attention, never seen such fast tech support forums.

I tried to change separatly every setting that can be applied to blender, nothing changes

Anisotropic Filtering setting setup in control by application mode.
AA - FXAA - off
AA - gamma correction - on
AA - settings - control by application mode and this setting is not active, cant change it
AA - transparency - off
AA - mode - control by application

No, but it seems like my videocard doesnt involved that way

Just updated everything, problem stays

This problem also exists in a current steam blender version (2.79b)