Vray sky background aliasing problem when using high area filter

[PIXELBOX_SRO]

Hi ,

this might be quite stupid question but i am getting some really nasty aliased edges in image where the object meets the background (vray sky)
all the objects in the scene are nicely filtered with area filter @ 2.0
but on its edges, the area bluring gets clipped :-/// and you can see the edges being completely aliased
Any ideas whats wrong??
Thank you

Bets Regards

Martin

[PIXELBOX_SRO]

checking the CLAMP output and SUBPIXEL mapping solves this

BUT

i dont want to use clamp and subpixel :-///