Just an update for users with 2Gbps plan, having the black box and having speed drop while in bridge mode. I have sent report to Unifi and they sent technician to my place to rectify issue.
Talked with the technician, they at the moment the solution they did some coding and adjustment with their in house software to troubleshoot the problem at the moment as the firmware for it is still in R&D stage.
However, after they did their thing for my black box and they went back. 1 day after, the speed dropped again and contacted to come again next week.
During troubleshoot time they have a problem because it was conflicting with the ATA as I have another small black box was used for having 2 phone line. If it wasn't the ATA issue, they could have done it in 10-15minutes as they previously solve the problem of drop speed for other users as well. Only my case is because I use ATA so is first time for them and abit troublesome.
I shall update you guys again next week when they come over to troubleshoot again.
Furthermore, I overheard the technician complaining all the combo box from TM has problem to their team. There is another bug where their combo box can only only support up to 64 devices only, anything more than that the box itself with freeze or restart itself.
If that's true, then it's a hardware limitation that cannot be solved via software