Yafray Shadow Flickering

Hey everybody, I’m using Yafray to render my animated short, Newton’z Apple, (or at least I want to use Yafray) and I got a render setting that I like for stills, but when I render, I get some pretty bad flickering of shadows. (Watch the ground near the edges, and his body by the shoulder). Is there any way I can get rid of this flickering? If I need to I will post a screen rip of my settings tomorrow. Thanks to all!
newtonwalk2small.mov - 0.66MB

Think the reason that it looks weird is because YafRay takes different samples everyframe, so if you wanna make it look better, then you might try rasing some samples.