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I'm having the same problem for weeks now, ı was able to play just fine before...
Do you have Windows 11 24H2? If so this is certainly the cause of this problem.

it is a severely broken Windows update that has caused problems across the whole gaming - indeed computer - industry.
https://forum.paradoxplaza.com/forum/threads/game-crashing-after-windows-11-24h2-update.1718749/
https://forum.paradoxplaza.com/foru...-freezes-after-installing-win11-24h2.1725554/
https://forum.paradoxplaza.com/foru...ws-11-24h2-with-exit-code-3221225620.1712339/

Some users found relief in various ways:
https://forum.paradoxplaza.com/foru...r-installing-win11-24h2.1725554/post-30126081
https://forum.paradoxplaza.com/foru...-windows-11-24h2-update.1718749/post-30159638
https://forum.paradoxplaza.com/foru...-windows-11-24h2-update.1718749/post-30062333

A user has come up with another possible workaround
https://forum.paradoxplaza.com/forum/threads/24h2-w11-update-issue-found-no-more-crashes.1728373/
Some affected users have definitely seen that help them with this issue. I'd try this first as it's been pretty successful!


The CK3 devs are aware of the issue of course, but I don't know whether it is thought possible to change the game to work around the Windows 11 bugs.

IF however you don't have 24H2 your issue is unrelated, please start your own thread on that, thanks.
 
It has nothing to do with windows 11 or 24h2 update. I have tried every method, formatted the whole computer and the problem still persists.

I have ryzen 9700x processor 64 gb ram rtx 5080 video card
The game uses the processor between 85-95%.
The video card is running at 100% load. I play at 1080p resolution.
As soon as the computer freezes, the game uses all 64gb ram and locks the computer.

I tried it with the latest windows version on a computer with 7700k processor 16gb ram rtx 2060s, there are occasional freezes in the game, but the pc does not crash and the game can continue to play.
I guess you can't play the game if you have a good system.

Paradox team should stop blaming window and focus on the problem of the game urgently and fix this problem
 
It has nothing to do with windows 11 or 24h2 update. I have tried every method, formatted the whole computer and the problem still persists.

I have ryzen 9700x processor 64 gb ram rtx 5080 video card
The game uses the processor between 85-95%.
The video card is running at 100% load. I play at 1080p resolution.
As soon as the computer freezes, the game uses all 64gb ram and locks the computer.
After the reinstall do you have Windows 11 24H2? If so that is certainly the cause if your problem, despite what you feel and say here.

It is not impossible the CK3 devs can find a way around those issues (as I mentioned above), but it is unarguable the root cause is that Windows version - folks who have been able to revert to 23H2 report an instant fix for the computer freezing.

You don't mention looking into those workarounds I linked above; if you haven't, please do so - they may very well help you.


ETA: folks in this thread
report that switching the game's Renderer to Vulkan works around the problem too, so that's an easy thing to test.
 
I still have the issue with latest nvidia driver 572.47, I tried several things and they still dont work
Have you tried switching the renderer over to Vulkan? This is the only thing that worked for me. I still have the issue when I switch back to DirectX 11.
 
This does in fact feel like a memory issue.

CK 3 will launch just fine in both DX11 and Vulkan as long as it's the first time I launch the game after a PC restart. After opening and closing the game a few times, the game will start crashing on launch (with Vulkan) and freezing the PC (on DX11). Removing mods/DLC will make the game launch again, but if I then exit out of the game and try to launch it again with the same mods/dlc it will once again crash despite the game having initialized without any issues not 3 minutes prior. This will continue until I restart the computer, at which point the game starts to work fine again.

It's almost certainly not an issue with the game/mods themselves because despite the crash reporter saying the application had to exit unexpectedly, the game will sometimes load anyway! And I can play it just fine.

ck3_xkYSNOU1Qt.jpg