title: weird artifact appear while baking lightmap in unity
body: <p>I have been baking lightmaps in unity for a model and every time I bake light map weird noise appear in the baked object. I have tried generating UV's in unity and also created lightmap UV's and try to use it but still the issue remains.</p>
  <p>these are the noises that appear in the model.
  <a href="https://i.stack.imgur.com/mBFRG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mBFRG.png" alt="image 1" /></a>    <a href="https://i.stack.imgur.com/SxeWz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SxeWz.png" alt="image 2" /></a> <a href="https://i.stack.imgur.com/reSg2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/reSg2.png" alt="image 3" /></a></p>