>>any script code that's declared in the .htm file will run in the main process too
Great!! Thank you for the hint! Now it works very fast.

I am writing script which generates multiscatter data for Octane render. It's very handy to use MoI for this purpose. But I need to process huge amount of data in short time (100000 - 300000 points). Now it will work even faster than before. :) I'll finish it in couple days.

This is a test renders. Both scenes created in MoI. I spent 30 minutes making this.
First one: 6 objects, ~10000 instances. Second: 1 object, ~7000 instances.