If you work in the Mac space, your Mac computer needs to be running OS X 10.9 (AKA Mavericks) or newer.
If you are in the Windows world, make sure your device is running Windows 7 x64 (64-bit) Service Pack 1 or newer.
A more powerful system will perform better when running CineXtools. But, because most real processing is for small bits of video and audio, the biggest factor is disk I/O for read and write.
You’ll see the best performance when you work on SSDs, particularly for the target drive. A fast local RAID or fast network storage on an 8 Gigabit or faster connection will help, too. Avoid working on devices such as a USB2 single platter spinning hard drive.
If you have any questions, please get in touch.