Particle system rain realism help

Hi guys

Any chance anyone could help me out with the settings on here
to make my rain look more realistic? I’ve tried motion blur under the render settings but seemed to be of little help.

Did the initial setting using Andrew Prices rain tutorial using the ‘line’ instead of object (cylinder) but the lines wouldn’t render for me in cycles… the object is on layer 2

Thanks in advance

1 big thing is that the particles seem to be emitted in waves, - is there any easy way to fix this? I tried changing the random setting under ‘emission’ but it makes my cylinder come down sideways for some of the particles…

Add a subframe

Thank you Richard, that fixed the wave problem. If anyone else has any tips on changing the object settings or anything else that might help for the realism would be great.