---
title: "Performance"
canonical: "https://documentation.chaos.com/space/VBLD/117639386/Performance"
format: markdown
---
This page provides information about the Performance tab of the System Settings. Parameters Thread Mode  – Controls how V-Ray uses your CPUs and how many threads it will run on them.  Auto  – When enabled, V-Ray detects the number of available CPU threads and uses them all. The number of threads is displayed below this dropdown menu. Fixed  – Allows you to manually specify how many threads V-Ray uses. Threads  – When Thread Mode is set to Fixed, this parameter determines the number of threads used by V-Ray. Lower Thread Priority  – When enabled, the rendering process has a lower thread priority to allow other processes to run faster.