The Vue 8 blur works just fine for me.

A couple of things:

1.  To minimize blur artifacts when using either Hybrid 2.5D or Ray Traced blur, make sure you set Object AA quality to 100%.  I normally use something like 4 min rays 8 max rays and quality set to 100%

2. Here is a comparison of the various Vue blur methods .  For the ray-traced blur, I set max rays to 128 which really increased render times versus the Hybrid blur.  Normally, the Hybrid 2.5 D blur will work just fine with 3 to 5 passes and Object AA quality set to 100%