Yes, deleting temporary files can help to speed up your PC. The idea is that these files are no longer necessary and freeing up space will help improve the PC’s performance. However, it is important to remember that while deleting these files can help, they may also be used to re-establish certain settings if they have been changed or deleted. This means that while deleting temporary files can help to improve performance, it should only be done when you are sure that no important data will be lost in the process.