Performance of Mix.Balls decreases when Rendering Quality option is Selected

Performance of Mix.Balls in J2Ddemo test falls from 30 FPS to 6-7 FPS when "Rendering Quality" option is used from the tools.
This is a regression.
From the build of 4rth may , the performance is around 30 FPS when "Rendering Quality" option is used.
The Performance number can be seen in the Bottom -right side of J2Ddemo test itself.