What is 'laggy'? Maybe you should post an example.

That looks totally normal to me. I don't know what problem you think you're seeing. There's no ghosting - just the expected motion blur.

25p is jerky, if that's what you mean by laggy. Try shooting 60p or speeding the footage up to 60p and see if that looks better.

Or maybe you have a playback problem. Try different playback hardware.

At times the white cable is very subtly showing some flicker, perhaps from a fluorescent light with magnetic ballast, which would flicker at 100 Hz. But otherwise it is doing exactly what I'd expect for 25p with a 1/50 s shutter. The motion blur covers half the distance traveled.

You will need to be more specific about the problem you are seeing.

Looks normal for 25P.

well but if i need a project to be exported as 25p what framerate u would choose for pans like that ?

If you change the shutter angle or shutter speed you can increase the motion blur and minimise the effect you are seeing. Try 360deg or 1/25 sec. This is how film cameras get around the issue at 24 fps.

I am sure there are others but this will help maybe. http://www.red.com/tools/panning-speed

I recall I read that the "trick" is that you should have something closer in frame for the viewer to focus on, this is how you can "distract" the brain of the viewer in to not seeing the judder. Once you know this fact try looking at any film pan and it quite surprising what you have been seeing for years without seeing it if you get my drift.

Stick to 1/50 shutter speed, follow the action, move very slowly, and avoid "unjustified" camera movement, which should be dictated by the narrative and/ or the aesthetic. E.g. pan to show a landscape (follow the vertical lines of the composition), tilt up to show a towering cathedral.