I've been playing Watch Dogs:Legion for the past week and a half and it was running fine, but recently (past few days?) my game was stuttering every second. It took me a while to troubleshoot, but the culprit was DisplayFusion - leaving it running while playing my game was causing the stutters, but when i closed the program, the game ran smoothly again. Was there a recent update pushed? Logs attached. Link to video of stuttering here.

The issue still persists after following your instructions. Ive tried other games from my steam library and they seem to be running fine with DisplayFusion. Its just this title for some reason. Its launched from the Epic Games launcher as well as the Ubisoft Uplay launcher.

Unfortunately, the game is still stuttering with those advanced settings off and the game under the compatibility tab. I am not sure if this will be of any help, but here is another log file while the game is running.

Yeah, can confirm this happened to me too. Watch Dogs Legion, Ghost Recon Breakpoint and Wildlands.

I was on Windows 11 and thought this was a Windows/AMD issue. Rolled back to Windows 10 and still happened.

That appears to have fixed the issue. Thanks!

Picking this up.
Disabling that setting does in fact remove a 1 second stutter in Watch_Dogs, but also other games.

You could introduce a warning on hover on that setting for gamers..?

Hey Owen,

Just installed Ver. 9.9 and tested it out with a couple games on all default DF settings. There is no more stutters, game is running as smooth as it can be. Thanks for the update.

Interestingly, v10 Beta 13 caused this stutter issue for me, specifically in DayZ and Arma 3 (which use the same engine)
v10 Beta 12 was fine.
I had to add both EXE's to the compatability and disable the toolbar buttons to get it to stop grinding to a halt when the mouse was moved over a GUI element in both games.

no, I dont own arma 2

Steam 10.0 (Beta 16) update has not fixed it for me, I still require the compatability settings active for Arma3 and DayZ.

For me it needs both "Disable Titlebar Buttons (this application only)" and "Disable Application Hooks (this application only)" enabled or just "Disable Application Hooks (this application only)" enabled on its own.

"Disable Titlebar Buttons (this application only)" on its own doesnt stop the freezes like it fixed it for Bruce Wayne93487.

Stuttering in both 9.9 and Beta 16. Beta 16 seems to make me stutter even worse though.

Finally there is an answer to this issue

I had the same thing happen in Arma 3
Whenever I move my mouse in the UI
(in main menu or in the map, whenever there is visible ingame mouse)
It would basically put the game into a complete stop, down to 0 FPS
The more rapidly I moved the mouse, the worse
(but it was still possible to do things, just very annoying)

I searched for a long time, found stuff about mouse polling rate and arma and all kinds of other stuff.
Nothing worked.

Now I found this.
And it is indeed DisplayFusion.

Currently on DisplayFusion Pro 10.0 Beta 16 (but it was like this for a long time)

Start Arma 3
BattlEye blocks the hook
https://i.imgur.com/ZpNDbft.png
Then the mouse issue happens.

Go to DisplayFusion settings compatibility and add arma3_x64.exe
Disable Application hooks
https://i.imgur.com/vhu07yN.png
No more mouse issue.

Big Thanks!

It would be lovely if this got fixed for everyone.
(e.g. disable hooks for arma3_x64.exe and arma3.exe for everyone by default perhaps?)
Especially because its not exactly clear that DisplayFusion might even cause such issue in some game

I forgot to mention.

My TitleBar buttons are not enabled.