CoreAffinityFixer

A DLL tool that automatically and continually sets the affinity of an app to the maximum amount of available cores.

Usage

All you need to do to enable the fix is place the DLL in your app directory and import the main export of the DLL (FeedMeCores). You can import this export on either the app/game's EXE itself, or another DLL that the executable imports, using CFF Explorer, DxWrapper, or any other tool that can handle DLL injection/importing.

Regardless of what method you use to load the fix: Place CoreAffinityFixer.dll on the same folder as the target exe or dll that the game uses.

CFF Explorer Method (Editing game files):

1. In CFF Explorer, open the target exe/dll that you want to edit. It's wise to also make a backup of that target file, since you will be editing it.
2. Go to Import Adder and add CoreAffinityFixer.dll
3. Select FeedMeCores from the list, click Import By Name and then Rebuild Import Table
4. Save the edited dll/exe by clicking the save icon on the top left, overwriting the original file.

DxWrapper Method (Game files are not affected using this method):

1. Find a suitable Stub dll for your target app (version.dll is pretty universal) and place it next to the app's executable. Also place dxwrapper.dll and dxwrapper.ini in the same directory.
2. Open dxwrapper.ini and set LoadCustomDllPath's value to CoreAffinityFixer.dll

Configuration

You can optionally use a CoreAffinityFix.ini file (example included in the release zip) with any of these 3 options:

• InitialDelay: The number of seconds to wait before initially setting the new core affinity (Default: 5)
• LoopInterval: The number of seconds to wait between each loop of setting the new core affinity (Default: 1).
• CreateLog: When set to true, a CoreAffinityFix.log file with some good-to-know info will be generated. Note that the log will be generated when an error occurs, even when this setting is not present.

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Notes

• I originally made this for Splinter Cell Blacklist, which notoriously only uses 1 (!?!) core. But the dll is built in a way that allows it to be used on any executable, you just have to do the importing part.
• You will notice that when logging, the new affinity mask will be a weird number. The program uses SetProcessAffinityMask, which uses a bit mask. The log shows that mask, represented as an integer.