processor affinity

Processor affinity is a Windows feature that lets you control which CPU cores a specific process can use. This can help limit CPU usage for background apps, reducing stutter, high temperatures, fan noise, and sluggish multitasking. By assigning a busy background process to a smaller set of cores, you free up CPU resources for foreground tasks like gaming, editing, or browsing. This technique is useful in Windows 10 and 11 for managing system performance, especially when a background app interferes with your work. The process involves using Task Manager or command-line tools to set affinity, but it requires careful handling as improper settings can affect system stability.