Bryce has never had oversampling of the Anti-Alias feature(2x, 3x, etc) Anyway, there HAD to be a setting that was different in the two renders. You can't do the same exact render settings in both 4 & 5 and end up with 4 having Quadrillions and 5 only having trillions, it's simply impossible. I'm sure what happened is in the Bryce 4 render your settings were on "AntiAliasing Fine Art(Slow)", which will make a render go from trillions to quadrillions, no problem. BUT, you probably didn't save the Bryce 4 scene with the AA set to Fine, so when you brought in into Bryce 5, it rendered it on "Regular (Normal AntiAliasing)", thus getting done so fast and with less Intersect Attempts. I tried what you said with a scene of mine, no difference in the render results, other than a little more time in Bryce 5. (19 sec. vs. 18sec.) I then took the same scene back in Bryce 4 and set it to "AntiAliasing Fine Art(Slow)". It went from a speed of 18 seconds to 2min. 9sec. and went from 6.81 million to 4.82 billion. AS

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