We are aware of some issues when using Corona + iToo plugins. Some of the most common ones are slow parsing / pre-rendering stages and freezes with IR.
The good news is that:
- we have already fixed many (all that we were aware of?) issues and they are already included in daily builds - https://forum.corona-renderer.com/ Chaos Corona 10 for 3ds Max - Daily Builds Changelog
- iToo are also working on some additional fixes
- all of this will be included in Corona 10 (planned for May - Trello )
If you would like to share your exact problem, please do. We can test your scene and check if it’s better with the newest versions now. You can share your problematic scene with our support team here: https://support.chaos.com/hc/en-us/requests/new