Ensure "Multithreading" is enabled in Options > Settings > General to use all CPU cores during compression.
Windows 8.1 users often find the right-click menu cluttered. WinRAR adds several entries by default. winrar for windows 8.1 64 bit
WinRAR is a trialware file archiver utility for Windows, developed by Eugene Roshal. For users on Windows 8.1 64-bit, WinRAR remains one of the most critical utility software installations. While Windows 8.1 has native support for ZIP files, it lacks support for the RAR format and high-compression algorithms. This paper outlines why the 64-bit version is mandatory for this OS, installation procedures, and optimization settings. Ensure "Multithreading" is enabled in Options > Settings