Hi Florian,
This works as intended, but you need to setup the debris properly for it to work.
While you’ve enabled you’ve set the debris lifetime there are still two other parameters that must be set for it to work.
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You will need to enable the “Flag” for Debris Timeout
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You will need to set the Debris depth to the depth you want it to affect. By default that is set to -1 which will not affect anything.
Some clarification on things as well. The values for Min and Max with these settings will make all the chunks disappear at the same time. This is because it’s taking an average between the min and max and using that.
If you want them to fade I’ve got a setup below that can help with that using the standard fracture tool in UE4.
These settings will get the basics:
These settings will get you the fade (may need to be adjusted depending, but it works with the cube that has been fractured):
Give these a shot and if you have any questions with this topic I’ll be glad to help.