Polling engines do not organically begin to shut down SolarWinds process. which makes the second question redundant. Considering you are posting here in the NTA forum and not in the NPM forum about the performance, I would recommend cranking up the sampling rate on your flows. What you may be experiencing is a bottleneck at the DB I/O level. Alleviating how many flow you are capturing per second may help.Is there any other information you can provide?
Feel free to ping me directly
We just migrated the database to a more robust VM environment. We are monitoring at this time.