Vray Animation Settings

[lvl1201]

Im doing this college project, and im trying to make a good animation, i know the basics of animation, like batch render, outputs etc etc

Ive been using Irradiance map + Monte-Carlo (pretty much, allmost all settings are set to default).
monte carlo GI are 8, 3 (subdivs, secondary Bounces)
IM are -3, 0, 0.3
50, 20, 0.1
0.1
(yes i know its a weird way to put settings but that was all my brain could give at this time)

My question is, ive set the animation to run at 30 fps BUT somethimes it seems a lil bit below 30, the animation isnt that fluent, what can i do?

The other question is there ANY way to make shadows look more sharp and without "noise" without pumping the Image sampler - threshold to 0.005 and the DMC sampler to 0.005

AND how can i make everything to look more realistic? Aside from using good materials and lighthing

Heres the link to the animation (WORK IN PROGRESS)

http://www.youtube.com/watch?v=nooWuLF-Ry4

Thx dudes