Some contents or functionalities here are not available due to your cookie preferences!
This happens because the functionality/content marked as “Google Youtube” uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.
Seems to me you need to abandon the infinite light and use point or area lights located inside of the studio. Think of it as if you’re setting up stage lighting for a play or TV show.
The “on collision” setting simply means that nothing will happen until something collides with your fractured object, so it sounds like it’s working properly.
Judging from the noise pattern on the wall it looks like your GI settings are way too low, but it’s impossible to say more without the scene file or at least more information about your settings.
There used to be a really cheap, or maybe even free plugin that did something like this, but I don’t know if it’s still available, or whether it works in recent versions of Cinema.