over 2 years ago - AndrewT - Direct link
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/CK3/pdx_settings.txt .
From your Documents/Paradox Interactive/CK3/logs/ folder, attach here system.log , error.log


Please report the temperatures of your CPU and video (GPU)
1/ before starting the game up and
2/ after say 10 minutes' play.
If your PC's vendor has given you no way of reading temperatures, install
SPEEDFAN http://www.almico.com/sfdownload.php  
over 2 years ago - AndrewT - Direct link
Ganymedes said: emperature before starting up is 24C
After 10 minutes of play 50C
Is that just CPU temps? Because you say your GPU fan is going fast, which means it would likely be over 80c

In the launcher, disable Vsync and set the frame rate cap to 60 - does that help?  
over 2 years ago - AndrewT - Direct link
Ganymedes said: But my Geforce RTX 3080 should actually work normal on high settings, right?
Certainly! This must be a game bug I think, I'll raise it with Paradox tonight.

Sorry about that!