AndrewT

We have three possible workarounds that may solve it:

Disable IPv6
- Close CK3
- Go to Control Panel > View Network status and tasks > Change adapter settings (left side)
- Find your Hamachi Connection and Disable it
- Find your Internet connection adapter (for me, it was WiFi)
- Right click your internet adapter and select properties
- Scroll down to find "Internet Protocol Version 6 (TCP/IPv6) and uncheck the box
- Select Ok
- Start up CK3 and should work.

Disable all other network adapters
Go to Windows Control panel.
Click on Network & Internet.
Click on View Network Status.
Quick Tip: You can also quickly access these settings by right-clicking the network icon in the taskbar and selecting the Network & Internet settings option.
Click on Change adapter options.
Right-click all network adapters that are not connected to the internet and select the Disable option.
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alexlee24 said: I ticked "Disable fullscreen optimization" and unchecked all other boxes in that dialog, it just makes the fps higher, but the problem persists.

You haven't done everything I suggested here, the refresh rate is set to 170 still and you are in borderless mode:

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If you want the developers to look at this you'll need to post in Bug Reports forum - they do not read this forum.

And it will have to be a game with NO mods used in it ever.  

Once you do that please attach here the problem save file, thanks.  

Anyone new posting here Please do a full clean re-install:

move any valued save games elsewhere
"uninstall" in Steam-EU4
manually delete both the Steam/SteamApps/common/EU4 AND Documents/Paradox Interactive/EU4 folders - In particular make sure there are no files or folders left under either the Steam EU4 or Documents EU4 locations, before installing again.
re-install game in Steam, run a Steam Verify when done.
add EU4.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.
run the game up to the main game menu then exit to the desktop again (to create the settings files)


THEN Right click on eu4.exe , properties, compatibility. Tick "disable fullScreen optimisations" untick every other box in that dialog, Apply and exit.

THEN edit Documents/Paradox Interactive/EU4/settings.txt as follows:

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Norton's were able to help you, were they?

But yes, I'd test for any progress by starting a new campaign. If you still get this problem, can you be more specific about what event in the game you feel is causing this? A screenshot then maybe?  

I'm not a Windows support expert I'm sorry, nor do I use Nortons. I'll do my best but you may need local help, it seems.

Contact Norton support for how to except a .exe in their software, and indeed how to prevent it doing realtime scans of the game's folders
Steam/SteamApps/common/CK3 AND Documents/Paradox Interactive/CK3

To unload GeForce Experience you right click on it in your task bar and select Quit or Exit.  

I see you have Norton AV; while that in general out not to be a problem once the game has started, do make sure ck3.exe is in all its exceptions lists.

Stop Nahamic from loading at boot time then reboot.

Unload GeForce Experience before starting the game.

I don't know what all those ASUS utilities do; if any of them do overclocking (or indeed if you have any overclocking at all from any source!) please disable it.  

Did you see this question?

grotaclas said: Is there maybe a war between two AIs which have colonial nations? That causes freezes in some cases since version 1.34.

Maybe attach a problem save file here to see if we get the same problem.  

This smells of a Windows or hardware problem to me, although why only this game I cannot say.

Make a new Windows user on this machine and log into it with that. Do you still get that same pattern?  

Please install and run the free utility Speccy. Send its output to a text file and attach that here, thanks.  

It's hard to understand why EU4 sees this and CK2 does not - they are very similar under the covers.

But if this has only just happened, Please do a full **clean** re-install:

- move any valued save games elsewhere
- "uninstall" in Steam-EU4
- manually delete both the Steam/SteamApps/common/EU4 AND Documents/Paradox Interactive/EU4 folders - In particular make sure there are no files or folders left under either the Steam EU4 or Documents EU4 locations, before installing again.
- re-install game in Steam, run a Steam Verify when done.
- add EU4.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.
- start the game with no mods active and test with a new campaign, NOT any existing one.

Is that any better?  

Then they really shouldn't be showing as incompatible. Attach an affected one here please.

@grotaclas have you seen anything like this?  

ElektrikRush said: The crash report used to report them in the 130MB range, but now it's in the 50s, usually around 54.

Used to report what in those ranges, sorry?  

If those are saves from 1.34.x you need to revert to that version in the Steam Betas tab. You don't need any code to do that.  

Please lodge a support ticket at Paradox.ZenDesk.com , and paste the key you got from Humble in there, along with a screenshot of the receipt from them showing you bought a pre-order key.  

I don't see any good reason for this in those files. You may as well update those nVidia and AMD video drivers though:

Download the latest official NVIDIA drivers

Download the latest official NVIDIA drivers ... Read more

CK3 is of course not incompatible with Win10 or 11 - that's what it is developed on!

ElektrikRush said: everytime I put the refresh rate at 60, I see it go back to 144

I've seen that recently with a number of games, not sure what causes it - hardware, video driver, or what. What actual rate are you seeing? If it's more than 60 can you cap it with some other utility?

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Please try this:

- uninstall Paradox Launcher v2 from the Windows "Apps and features" utility, if still present.

Delete the following folders if still present:

- C:/users/{userName}/AppData/Local/Programs/Paradox Interactive/
- C:/users/{userName}/AppData/Local/Paradox Interactive/
- C:/users/{userName}/AppData/Roaming/Paradox Interactive/launcher-v2/
To see the AppData folder you'll need to enable View Hidden Items in File Explorer.

- exit the Steam app entirely
- run steam.exe as the Windows Admin user
- run the game from the PLAY button in Steam
OR
- exit the Epic app entirely
- run EpicGamesLauncher.exe as the Windows Admin user
- run the game from the Epic client

IF that doesn't help, in this folder are some .log files:
C:/users/{userName}/AppData/Local/Paradox Interactive/launcher-v2/
Please attach them here.  

Was this in a campaign started under the new patches 1.35.x ? If under an older patch, you'll need to revert to that version in the Steam betas tab for the game, to continue it.