See Fixing timing precision in Windows after "The Great Rule Change" for a detailed explanation regarding the techniques used to restore the old timer resolution implementation otherwise nothing below will make sense.
MeasureSleep is used to measure the precision of Sleep(1). The closer it sleeps to 1ms in reality, the better. By default, it sits in an infinite loop measuring the sleep deltas, but you can use the --samples argument to get average, STDEV metrics.
SetTimerResolution is used to request a higher resolution. To automatically start a hidden instance of the program when the system starts and raise the resolution to 0.5ms, place the binary somewhere safe and create a shortcut in shell:startup with the target below.
C:\SetTimerResolution.exe --resolution 5000 --no-console
Thanks to a comment on the Great Rule Change article, on Windows Server 2022+ and Windows 11+, the registry key below can also be used so that requesting a higher resolution is effective on a system-wide level rather than only the calling process.
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\kernel]
"GlobalTimerResolutionRequests"=dword:00000001
Expand Micro-adjusting timer resolution for higher precision for a detailed explanation. The micro-adjust-benchmark.ps1 script can be used to automate the process.
Visualize the results with chart-studio.plotly.com.
git clone https://github.com/amitxv/TimerResolution.git
cd .\TimerResolution\
# x64
$env:VCPKG_DEFAULT_TRIPLET = "x64-windows"
# install dependencies
vcpkg install
# replace "SetTimerResolution" with "MeasureSleep" if desired
MSBuild .\SetTimerResolution\SetTimerResolution.sln -p:Configuration=Release