Vray velocity pass issue in nukex

Hi there folks,
never had a working result with using vray velocity pass in nukex. So its time to ask you guys for some help.
No idea what I can do differently to make this work. I am probably forgetting something?
when I wipe from left to right in nuke, on the left is a reference of rendering motion blur directly in vray and on the right is the vectorblur comp. I have no clue.
Thank you for your time.

the pass itself https://youtu.be/9We8u3-J0b8

Try using the “V-Ray Velocity” preset and enabling “Normalize”. Also, set Blur UV to none; Blur Type set to Uniform. This way, the results are similar to V-Ray.

the issue was resolved by rendering in 32 bit. thanks for the reply.
what also could have helped, is this time I used a single multiEXR pass instead of a separate velocity pass but I am not sure.

If you are using float you have to use vray velocity (not clamped). Also what hermit crab said. In this case, motion amount of 1 = 360 shutter, so you have to set it to 0.5 for a 180 (real world shutter).

Nothing worked, clamped or not. I tried all the settings.
The only thing that solved it was rendering a multichannel exr in 32 bit.