hi! I’m having problems rendering hairs...I have a scene with a lot of grass and even if I raise the AA samples hairs are still flickering!!! do you know hoa to make it looks good??

Try lowering the sampling contrast to .05 Its the three color sliders under the min and max alias inputs

Falun Dafa
A meditative practice for the mind and body
http://www.falundafa.org

Use the rasterizer instead of scanline or raytrace. It makes wonders!