S1-L2 pre processor running continously

Dear Sen4Cap-Team,

we set up two identical machines with Sen4Cap 2.0. Unfortunately, on one of them the S1-L2 pre processor is running continously. In other words, after finishing one pre processing job the next one starts immediately.
In comparison to the other machine, it seems like too many jobs are being started. This also leads to massive storage consumption.

Does anybody have an idea how to solve this issue?

Thanks and kind regards,