Sims 4 Performance and Crashing (Crash on Travel, Slow Load Time)

I have the same issue. Minor glitches and bugs aside, my game crashes so frequently when playing my main save that it has been rendered unplayable.

Like others, "The Sims 4 has stopped working" error messages and resulting crashes are triggered by any attempt to save (the game, a lot to my library, etc.), when my Sims attempt to travel, and/or when simply trying to load a household. I can sometimes get in an play for a bit, but none of my Sims can travel. I do not play with mods or cc, unless I have unknowingly downloaded either from the gallery. The most obvious head-scratcher is my save inexplicably being 75K+ KB large.

I've scoured the main TS4 forums and these EA Answers HQ forum and have attempted the following without resolution:

• repairing in Origin and assuring I wasn't missing a patch/update.
• moving, relaunching, and pasting the saves file, etc., back in (this -> http://answers.ea.com/t5/The-Sims-4/Game-crashes-everytime-I-SAVE-or-TRAVEL/m-p/3451757/highlight/false#M158). The problem returned once I pasted the save file back in.
• emptying some household inventories.
• confirming my NVIDIA driver was up to date.
• lowering graphics in-game from high to medium.
• disabling laptop mode.
• confirming available memory (see attached DxDiag).
• disabling Origin in-game.
• playing offline.
• emptying my Sims 4 cache.
• I tried rolling back to an earlier save but either there isn't one or I just can't figure out how to do it. I'm thinking I've only ever used this one save.

Someone suggested that I save all of my Sims and their lots to my library, launch anew, and dropping them all back in. I could do that (if I can save them without a crash) but I play about 20+ families that are (almost) all related to each other. If this fix means they lose all of their relationships, I'll have towns full of "relative-strangers" who may want to woohoo with each other and that's creepy... I also have not uninstalled/reinstalled my game or any packs, which has been suggested, for fear I would lose everything?

The problem started sometime after I downloaded/installed Spooky Stuff. I'm not saying Spooky Stuff is to blame, simply offering a date reference. Also, SS tried to install twice - or maybe it did, I don't know how to find out. I would assume a duplicate attempt would replace the original and not add double files. Around the same time frame while in-game, I also suffered a PC crash that was triggered by a Windows 10 update. May or may not be related, but felt it worth mentioning.

I have been able to start a brand new game/save that does not crash, so the error is somewhere in that particular game/save.

A link to a .zip copy of the save, a DxDiag, and one of several recent crash reports are in the spoiler below. If you need/want anything else, please let me know.

Thank you in advance.