Sims 4 Crashes

@abc1190706171  It's unusual for the contents of a Tray folder to cause issues, but maybe if yours is particularly large, it could be a problem.  One thing you could try is deleting the in-game Library entries you don't want anymore.  Or, if you want to keep everything, set aside the entire Tray folder, and if you later want some household or build you've created, you can restore that version of Tray long enough to grab the item(s) you want.

In terms of the files inside Tray, each Library entry has four or five corresponding files.  You can sort by modified date to see which ones are for the same item: they'll all have exactly the same timestamp.