So windows 8.1 has a little quirk that due to adjusting how mouse input works with very high resolution displays a lot of people have experienced problems with mouselag. .

The good news is that Microsoft released a fix for it, the bad that you have to add the game (or whatever) executables to the registry manually to adopt the mousefix for them. Apparently this doesn´t do anything to games with raw input.

This little fix makes it so you only have to right click on the exe´s to add them to the registry. Thought I´d share it since I find it pretty sweet and I haven´t seen it anywhere else. Full credit to dreamss on blurbusters forums:

download http://www.nirsoft.net/utils/nircmd.html and copy exes to c:\windows\
save this as mousefixcontext.reg and run it
right click on .exe and click on apply mouse fix

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\exefile\shell\Fixmouselag]
@=”Apply Mouse Lag Fix”
“NoWorkingDirectory”=””

[HKEY_CLASSES_ROOT\exefile\shell\Fixmouselag\command]
@=”\”C:\\Windows\\nircmd.exe\” elevate cmd /c REG ADD \”HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\AppCompatFlags\\Layers\” /v \”%1\” /d NoDTToDITMouseBatch /f && Rundll32 apphelp.dll,ShimFlushCache “


I put this on my onedrive https://onedrive.live.com/redir?resid=96B6875A64FE5C5A%21144. My av says it´s clean but you never know so it´s probably best to do it manually.