[2023] Lagging, grinding to a halt

Has this always happened on this machine since you've had this game? Or it was okay up to some point?

Any mods in use?

The similar game Crusader Kings 2 is free to play on Steam now - does it have a similar issue?  

Mods are user-written changes or additions (modifications) to the game. You subscribe to them in the Steam Workshop for this game. If you don't know what they are, you won't have done that, presumably.

CK2 has seen similar issues, but generally only when a single empire controls a large part of the map and then a war or rebellion breaks out, so there are too many units on the map for the game to cope with.

I'm not aware of a precise parallel with EU4, but let me know if this only happens in a comparable situation here.


ALSO:
DXDIAG is a program you run from the Windows search box on the task bar. After running it will open a window and start collecting info with a progress bar in the lower-left corner. When it completes click the 'save all information' button and save it to a file then attach that file here.

Please attach here your Documents/Paradox Interactive/EU4/settings.txt and pdx_settings.txt .
From your Documents/Paradox Interactive/EU4/logs/ folder, attach here system.log , error.log .  

Mod and DLCs are unrelated entities. Mods are free and written by users, DLCs are paid and written by us.

Would you say this is happening in your campaign in the circumstances I described?

a single empire controls a large part of the map and then a war or rebellion breaks out, so there are too many units on the map for the game to cope with.

Or regardless of such matters?


Your AMD driver dates from 2019, I'm pretty sure there's a December 2022 one.
http://support.amd.com/en-us/download

Can I get that settings.txt file too please.  

Edit that file to say vsync=no , and Right click on eu4.exe , properties, compatibility. Tick "disable fullScreen optimisations" untick every other box in that dialog, Apply and exit.

If that and the driver update don't help, I'm not sure what is causing this to you!