render has doesn't have a good quality as preview the rope texture is not showing well in the render, what is the problem?


heres the .blend file : https://www.dropbox.com/s/7orb65pyzrs6e3u/fuse.blend?dl=0
is there a way that motion blur will affect one object?


Yes. Disable Motion Blur in Properties > Object:



Now that object will not be affected: