Prusa Slicer error, refers to RAM
I was trying to slice 195 instances of a 9mm bullet model. It appeared that most of the slicing process was successful, but the status bar wasn't quite full. Seems like it got hung up on calculating print time, or maybe generating g-code, or some other process it completes at the end of slicing. See attached for reference.
Seems to be related to number of instances, as 100 instances did not end with error.
RE: Prusa Slicer error, refers to RAM
No issues with 195 instances of a 9mm round running PrusaSlicer 2.2.0-rc3 on MacOS.
A plate of 180 45ACP had no problem.
You didn't mention how much RAM you have on your system. Also, what slicer settings are you using? Different settings are likely to affect memory usage. Assuming it's a reasonable amount, did you try again after the hangup? If the error is repeatable, you might submit an error report over on the Prusa GitHub page so the developers can look into it.
and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan
RE: Prusa Slicer error, refers to RAM
If you can please open an issue https://github.com/prusa3d/slic3r/issues
and attach your 3mf that consumes so much memory.