Recently I've been experiencing terrible ping when trying to play games on Singapore servers. In the past, I used to get 80-90ms when playing in Singapore servers but recently I've been getting 390ms. I decided to check if this was a one-off problem and connected to Sydney servers to see that I still had a stable 60-70ms. After checking with other regions such as Tokyo and Illinois, I have concluded that this is a one-off problem that I only experience in Singapore servers.
I also tried to reset my PC and my internet but neither seemed to help.
Any help would be appreciated.