[2022] Fullscreen not working & Stutter when scrolling or zooming in/out

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

Then in the launcher Game Settings menu, select fullScreen display mode, Vsync off, refresh rate 60.

Is that any better?  

That system.log shows 120hz as the only available refresh rate at any resolution,. I've seen that once or twice before but have no idea what could be causing that.

What fps are you seeing in the game now?

And does this problem happen right from the start in 1444? Or only in mid or late game, or only after playing for a period?  

I'm not familiar with that utility, I have to confess. Can I get new copies of all those files in your OP here, with it in effect? Thanks.  

In that error log we see a problem mod, and some other unusual errors. 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.
- unload GeForce Experience if loaded
- start the game with no mods active and test with a new campaign, NOT any existing one

Is that any better?  

Neither, just unload it so it is not showing the the Windows task bar.  

The game is NOT restricted to a single core. As with all our current games it will use other cores when possible. But not all game processes can be usefully or safely made multi-threaded.

1.31 was slower than 1.30 due to the devs adding too many new provinces, they said. Later patches helped that to some extent but further optimisation may not be possible. But that issue was more slow time passing rather than the stuttering/jerkiness you see.


I see you have CK2, HOI4 and Stellaris that all use the same game engine as EU4 - do they all have the same problem?  

That is odd, as EU4 and CK2 in particular are very similar under the covers. I frankly don't have an explanation for what you are seeing!  

I know of no other tweaks to the game that might help you here.

You could try things like exiting Steam and running eu4.exe , and if Windows has Game mode enabled, undo that.