DisplayFusion RSS: Broken Unreal Engine/Fortnite fps with mouse movement, only when displayfusion is open https://www.displayfusion.com/Discussions/RSS/?TopicID=019b74f8-94b4-75b1-b1e4-37a146174800 DisplayFusion RSS: Broken Unreal Engine/Fortnite fps with mouse movement, only when displayfusion is open Mon, 06 Apr 2026 05:13:44 GMT en hourly 1 https://www.displayfusion.com/Discussions/RSS/?TopicID=019b74f8-94b4-75b1-b1e4-37a146174800 RE: Broken Unreal Engine/Fortnite fps with mouse movement, only when displayfusion is open https://www.displayfusion.com/Discussions/View/broken-unreal-enginefortnite-fps-with-mouse-movement-only-when-displayfusion-is-open/?ID=019b74f8-94b4-75b1-b1e4-37a146174800#2 Wed, 07 Jan 2026 19:41:11 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/broken-unreal-enginefortnite-fps-with-mouse-movement-only-when-displayfusion-is-open/?ID=019b74f8-94b4-75b1-b1e4-37a146174800#2 DisplayFusion Most customers that had reported this issue reported it fixed, but we can certainly re-test here. When you say that reducing DPI helps, which one of these do you mean?

  • Mouse DPI
  • Mouse Polling (Hz)
  • Display Scaling DPI

Thanks! ]]> Broken Unreal Engine/Fortnite fps with mouse movement, only when displayfusion is open https://www.displayfusion.com/Discussions/View/broken-unreal-enginefortnite-fps-with-mouse-movement-only-when-displayfusion-is-open/?ID=019b74f8-94b4-75b1-b1e4-37a146174800 Wed, 31 Dec 2025 15:13:27 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/broken-unreal-enginefortnite-fps-with-mouse-movement-only-when-displayfusion-is-open/?ID=019b74f8-94b4-75b1-b1e4-37a146174800 DisplayFusion Hello! I know about this bug and it was supposed to be fixed on latest versions/betas, but to no avail it came back again

Seems reducing DPI can reduce it to a certain point, but it still there

Hope we can achieve a solution
FPS Goes crazy with DF open and moving the mouse

Thanks! ]]>