• We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.
Right click on stellaris.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, then cap the refresh rate at 60.


If that doesn't help:
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/Stellaris/settings.txt and pdx_settings.txt .
From your Documents/Paradox Interactive/Stellaris/logs/ folder, attach here system.log , error.log .
 
Right click on stellaris.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, then cap the refresh rate at 60.
That appears to have helped. I had also turned off Adaptive Sync on my monitor because of an issue with 'total war: warhammer II'. I'll try going back to Borderless Fullscreen soon, but this was already immensely helpful, Thanks.

Also, since regular users can't delete their own posts, could you delete this one for me?

edit: btw, do you still want me to attach those files or was that just in case the first solution hadn't worked?
 
I won't delete the post, others may be helped by it.

No need to attach the files if the problem is fixed, thanks.