strange looking motion blur

[shadevfx]

Hi guys, we are getting some strange motion blur artifacts, where the blur looks kind of "clipped" Any ideas on some settings that might fix this?

Here are our globals

NOTES:
-Motion Blur (Globals)
Duration .22
Interval center .5
Bias 0
Subdivs 12
Prepass Samples 1
Geometry samples 2

-Camera: Standard

-Adaptive DMC
Lanczos (filter)
Size 2.2
Min subdivs 1
max subdivs 50
Threshold .01

-DMC Sampler
Time Dependent ON
Adaptive Amount 1
Adaptive Threshold .01
Adaptive Min Samples 5
Subdivs Mult 1

[vlado]

I'm not quite sure what's going on; can you get us that part of the scene to vraymaya@chaosgroup.com so that we can take a look?

Best regards,
Vlado