Traffice limiter is affective for torrent ???
i want to know that let say we limit speed per ip 96Kbs than if client download torrent it effect or not.
Yes, if you limit an IP address to 96Kbps then pfSense gives it downloaded packets at only 96Kbps. So if it does torrents it will get them at only 96Kbps and will slow down only its own work.
For example, I have my user's private mobile phones in a static mapped section of private address space that has a slow limiter like that - they get their mobile phone app updates and fun, but only slowly.