Ok thanks!
I wrote a paragraph (which somehow dissappeared, or had to be confirmed by an admin to post), outlining what methods I had tried to reduce the lag, e.g LOD (level of detail, shadoq quality, static meshes and lighting etc, but none of those worked.
I then found out by removing shadows completely, the choppy/lagg stopped. But the problem was that I needed shadows, so
imperativity advised that I turn my light to 'baked'. That removed the shadows from the scene for some strange reason. So some research online allowed me to find the solution of changing lighting to 'mixed', that way I can have shadows and no lag. I am still testing the shadow quality in my scene so its nice and critsp, not rough shadows!
