4.26 performance

and thats not at all proposed fix, its ridiculous!!! that is simple question, why is that ??? obviously in 4.25 ShowFlag.Translucency have small impact in this specific case (but that is ok becouse on plane landscape no translucency), then why 4.26 is so mutch differenece with r.ScreenPercentage=50 ShowFlag.Translucency=0 from 4.25?