Optimizing rendering

Hello all

I have use the Tubby tube and it is very close to what I need.

The next thing I need to do now is to optimize the rendering.

Currently I am rendering around 67K tubes around a sphere of various lengths and “resolution”.
is it must be possible to filter based on depth texture and view frustrum, but I can not find any mention of this in the graybook or the help browser.

Is it already baked into stride/fuse or do I need to do something that I can not find?

Sune