I was running game servers and when they have no players running, I wanted to put the servers' memory into the page file to save RAM.
I do know that Windows puts memory that wasn't accessed recently into the page file, however the jobs done with 0 players by these game servers do not have high urgency.
As far as jobs that the game servers need to do even with 0 players, I'm willing to test that myself and see if running it in the page file will cause a problem, so I don't need to be told if it's a bad idea unless it absolutely won't be reasonable.