Alas, earwax: I've started playing a little more, with resmon in the background. I made some new sims, and I gave my sims a job, and now the memory is rising again. And like clockwork, the 4GB memory mark (3884MB) the game crashes again.
Now I can start the game again, and it starts rising, by itself, even on pause.. I've checked the savegame folder, and it is about 23MB. The previous savegame folder was about 19MB.
Update from the husband: I have renamed the C:\Users\<USER>\Documents\Electronic Arts\The Sims 4 directory again, and restarted the game to re-create that folder. Exited the game, and copied the "saves" contents to the newly created folder's saves directory. I now have a "clean" Sims 4 directory with a savegame, and the memory isn't rising anymore.
If I now rename the newly created folder to sims4.working, and the old folder back to The Sims 4, and start the game, the memory starts increasing again! I don't have to do anything except continue the saved game, and once it reaches the 3880MB mark, it crashes again.
The problem appears to be in the personal game folder, somewhere, so did the following tests:
- Clearing the 3 cache folders (cache, cachestr, lotcacheddata) does not help at all (took the "broken" Sims 4 directory, removed the contents from those 3 dirs). The memory started rising again.
- After doing the previous step, I cleared the "Tray" folder. Does not help, the memory keeps rising again.
- I deleted the localthumbcache.package file. No help, the memory keeps rising again.
- Deleting all files in the root of the Sims 4 folder AND the Tray folder AND the 3 cache folders makes the "broken" folder stable again.
Note I did this with the second gamefolder that my wife started, (the one which worked for a little while until she made a new . The oldest gamefolder (pre latest patch) appears to be unsavable. I even tried to have sims create a completely new Sims 4 folder, and copy the "saves" contents over. It still appeared to start leaking memory.
I will let my wife have her laptop back, and let her play with the working copy of the game. Next time the game crashes (I am sure it will happen again), I hope I will be able to fix the game once again. I will use the simplest method, namely just renaming the original sims4 folder, and copying the saves back to the newly created folder.
Someone shouldn't have to be accompanied by someone tech savvy like me to play this game..It should be fixed. Clearly there is a bug somewhere that causes the application to crash after suddenly consuming about 3880MB memory.