HELP! Sims 4 Constantly Crashing!!

I have the same problem, but when the game crashes, my pc shuts down and turns on again. I also did everything you wrote in the list, and I also started to have this problem after the last patch or maybe a little later when the Reaper Rewards started.. By now I have lost hope 😞

I'm glad it's not just me...I'm losing hope too. Seems unfair to invest so much in packs and time in a game just for it to become unplayable 

Yes indeed, I have spent a lot of money on it by buying all the expansions, kit etc., I feel I am being taken for a ride. @ puzzlezaddict here's my crash file

RhiRhiCS melagigante  Please provide a dxdiag.  Hit Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop.  From there, you can attach it to a reply using the camera (Insert Media) icon included with the other formatting buttons.

my crash file

RhiRhiCS melagigante  This is the same dxdiag from the same system.  Are these both your accounts, or are you two different people sharing the same computer?  Either way, it would be easiest to have this conversation with one person/account at a time.

For the issue itself, are you running Sims 4 at a 3840x2160 resolution, to match your monitor; or a lower one?  If you're playing at 4k, please try 1920x1080 instead just to see whether it helps.  Your GTX 970 is still a capable GPU but might be having trouble keeping up with the demands of rendering so many pixels at once.

If that doesn't help, please try playing with your computer offline, just as a test.  You can sign into the EA App and put it in offline mode, then disable wifi and/or disconnect the ethernet cable before pressing Play.  I realize this is not a workable solution, but it is a useful data point.

Hello, apologies I downloaded her one to see what it was but I must of uploaded it by accident instead of mine! Here is my version:

Hello, thank you very much for your reply, usually even if I have the monitor at 3840x 2160 I play the sims at 2560x 1440 because the nvidia app recommended it to me and in fact I noticed that the game runs better. I will now try everything you told me and then tell you if it worked or not. Thanks again for your support. By the way we are two different people, but I read that RhirhiCS made a mistake and uploaded my file instead of his!

Well that makes more sense.

RhiRhiCS  Please force the game to run in DirectX 11 mode.  Open your EA App game library, click Sims 4 > Manage > View properties, and add -dx11 in the command line box.

I did several tests by changing the game settings and it seems that if I keep these settings it does not crash, I attach the photo for feedback (alto=high medio=medium basso= low).