I have tried to get a good answer on this for years. Back in the day on Unix we set our swap space to 2-3X the RAM. I continued this for quite some time on Windows but I have tried to ask PTC reps, HP reps, Dell reps and Microsoft reps about this and no one seems to know for certain.
Maybe I am mistaken but I am assuming the "mem_use INCREASE Blocks" lines in my trail file are referring to my pagefile size. I can't justify this assumption. I found this PTC link https://www.ptc.com/en/support/article/cs136279 which refers to "low level memory" but I don't have a clue what memory that refers to