The issue may be stemming from a buildup of memory allocation and not necessarily coincide with the time a task fires. With that being said, do you import/test tasks one at a time? or in bulk? Is it possible to narrow down when you first srtartd to notice the issue with the last set of imported tasks?
Is there any kind of pattern? Happens only at night, during a certain time of day, certain days in the week, etc...
You were able to view the BPAEM.exe process is the one taking the cpu. Is it possible to send us a screenshot of the task manager (showing processes of all users) to email@example.com? We will open a case and continue troubleshooting. Please reference this thread.