CoreDirector

CoreDirector is a free application to keep specified processes from being scheduled to efficient cores (E-cores), thereby keeping them on performant cores (P-cores).

Elevation is required to install and run.

A common challenge with heterogeneous CPUs like Intel 12th+ generation is the occasional undesirable scheduling of threads onto the efficient (E) cores, hampering their performance. This issue arises because most applications haven't been, and may never be, updated to provide hints to the scheduler regarding their thread load types, leaving Windows to make educated guesses. But don't worry, until applications are updated to specify where their threads belong, CoreDirector has you covered!

CoreDirector has several methods of enforcement, from gently disabling Efficiency Mode on target processes, to the little stronger CPU sets, to strict CPU affinities. See the 'Options' menu to choose the method(s) of enforcement.

Although we recommend using our more powerful Process Lasso software for this purpose, we have made this tool available to the community. CoreDirector will run fine alongside Process Lasso.