Purple Upload very slow problem

There are quite a numbers of report on Purple Upload slow (I have this problem since last fri), is there any resolution to it ?

https://www.reddit.com/r/firewalla/comments/whal9x/how_many_of_you_experienced_the_slow_upload_speed/
https://www.reddit.com/r/firewalla/comments/vakep2/odd_upload_behaviour/
https://www.reddit.com/r/firewalla/comments/wlovrj/purple_speed_test_something_isnt_right/

- notebook direct to ISP modem speedtest.net 200M dl and 20M up
- Notebook connect to firewalla purple, 200M dl and upload is below 1M
- Reboot, upload slow problem persisted
- switch to beta program 1.50.115 (1118), right after changed to beta, upload still slow below 1mbps
https://www.speedtest.net/result/13570157543
- internal speed test http://192.168.xx.xx:8833/ss/ around 900M-1000Mbpps (lan connection)
- Internet browsing response very slow/not responsing, WFH video call not working / very bad quality

I am WFH, need to fix this asap as it is impacting my work