VRayBitmap Blur Setting Problem

[DCHA34]

Hi,
from everything I've read and understood on the forum, I use the value 0.1 for the Blur setting of my VRayBitmap (thanks VRay Max Converter Pro).
But I'm having a problem with CPU rendering that I don't have with GPU rendering.
Here are a few images to help you understand the problem.
Is this normal? How can I fix this CPU problem?

[Vizioen]

Not sure who recommended you to put blur at 0.1 (also if so, AFAIK this does not apply to ALL the maps > bump, reflection etc I wouldn't touch).

Some interesting reads:

Bitmap blur and filter - Chaos Forums