I have been experiencing slow SPEED from LAST one week with Optus; it started with the internet going down with some sort of outage occurring, but was fixed in few hours. However, it’s since that time that the speed has taken a hit badly! I can use stuff like Skype and Imo easily, but when I try browsing it takes ages to load some sites. I have contacted the ISP, but was told by employee that they have passed the issue to some other department as they can’t do anything. Now, I am put on hold for nearly 15-20 minutes every time which really sucks! So, is anyone having similar issue with them?
First of all, did you check the setting if there is any CHANGE you made? Also, did you try resetting the Wifi/Modem? I believe that might just solve the issue for you. I am not exactly surprised with the reply, as they are well known for such ordinary service. It’s strange what other department they meant by? As far I know, it’s only support department that should handle the issue and that’s what you talk with when you call them. Anyhow, I think you should check Internet Outages community with LOCATING your area if someone having similar trouble. I am still not over the reply they gave you. It’s truly mind shuttering!

https://www.internetoutages.com.au/optus