Ok, let's do a simple math.
According to my firewall rules posted above, all transmission traffic out should go through PT interface, right? And the upload speed was limited to 120kB/s, and the real speed is above 110kB/s, let's say 100kB/s, then please note that my pfsense is up about 14 hours for now, total uploaded data should be 146060*100kB/1024/1024=4.8GB. Please check the attached image, and see the out packets statistics, it's only 537.67MB. Obviously not right.
Besides, there is no cloud service or something else that will upload data.
[image: PT_traffic.PNG]
[image: PT_traffic.PNG_thumb]
[image: uptime.PNG]
[image: uptime.PNG_thumb]