Thank you for replying.
I additionally tried un-checking all the individual "Log process launches", "Log process terminations", and everything below it. The issue still persists.
Next up, I exported my settings and reset my configuration via Options. Let's see if that fixes the issue.
EDIT: Nope, doesn't fix the issue fully. The only settings I changed after resetting the whole configuration was to disable logging by un-checking "Logging enabled", and to enable "Lower I/O priority during restraint", and very soon "I/O priority class lowered" shows up in the Actions log. Also, I updated to 9.9.4.81 beta before the latest test.