arccalc/dwmfix

Dwmfix is a small Windows utility aimed at one very specific problem: stuttering on a secondary monitor while gaming on Windows 11. The README explains the cause as Windows 11's aggressive energy-saving behaviour, which can throttle the Desktop Window Manager, known as DWM, on screens that are not the primary one. DWM is the part of Windows that draws and composes everything you see on screen. When it is throttled, the second monitor appears to stutter even though nothing is wrong with the game or the hardware. The fix described in the README is straightforward. Dwmfix runs in the background and constantly renders a transparent widget that the user cannot see. That tiny amount of continuous rendering keeps DWM from dropping into a low-power, low-refresh state, so the second screen stays smooth while the foreground application has full-screen attention. There is no driver work, no registry tweaking shown to the user, and no kernel hook described. The technique is a workaround rather than a system patch. Using it is three steps. Run DWMfix.exe, and a control panel appears. From there the user can manage the tool, toggle a boost mode, or hide the window to the system tray. The README's only instruction for normal use is to keep it running in the tray while gaming or working across multiple monitors. The project is described as lightweight, and the README is very short. It does not list system requirements beyond Windows 11, does not describe what boost mode actually changes, and does not state a licence. The repository is in Python according to GitHub, although the user is told to run a DWMfix.exe rather than a Python script, so the executable is likely a packaged build of that Python code. The README closes with a Ko-fi link asking users who found the tool helpful to support the developer. There are 43 stars on the project at the time of this snapshot, and no topics are set on the repository.