Roy, sorry to have kept you waiting; I was off-line for a while.
On your Bongo Render Animation dialog I see that the Stop tick is 79. As I explained above, it has to be set to 80 in order to have 80 tick-periods (like the 10 cm of the ruler). I guess that’s what spoils all your calculations.
Secondly I assume you try to render the various fragments by using the Frames Range setting at the bottom of the dialog. For the first fragment (tick 0 to 18) the range has to be 0 to 269; being 18 x 15 minus 1 (because the 0 counts – as I explained above: frame 269 is the 270th)
But I feel all this scheming isn’t necessary.
To render the first portion you can simply set the Stop tick to 18, and the Length in secs. to 18. For the second portion set Start tick at 18 and Stop at 32 (I hope I interpret you goal and timeline image correct), and the Length in secs. to 14 (32 minus 18). Etc…
About speeding up rendering: I assume you use Rhino’s on board render module. Speed depends strongly upon CPU speed. Factor slowing down are:
- Lights (the more the slower)
- Antialiasing (to be found in the Document Properties/Rhino Render : lower = faster)
- Mesh settings (to be found in Document Properties/Mesh)
Good luck and … courage.