vrayRT and motion blur

VrayPhysicalCamera parameters like shutter speed and f-number not affect motion blur in vrayRT window.
Motion blur is changed after vrayRT restart.
Is this normal?
3ds max 2013 64bit / Vray 2.30.01
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sorry for my English

Yes. See this page for more details: Chaos: Industry-leading design and visualization software

Best regards,
Vlado