It doesn't happen to me at my office's TIME Fibre line. Only at home where I am using Unifi.

unfortunately we've been through this process way way back. it's one of the first few things we did to troubleshoot. and yes, it still does not work. you can check the first page to see what we've done to try and fix it.
so far that's confirmed is Unifi users; no matter what speed and area all are affected. Celcom previously seems to be closely linked to this issue as well, but can't confirm for now since no Celcom users complained yet. no problems with Maxis Fibre and DiGi LTE; it downloaded really quick. we might have to add calling their centre simultaneously while spamming their Twitter, though i still don't have high hopes for that outcome..