I am experiencing some abnormal internet connection issues now.
-Using default DNS server(DNS server from NUS)
It appears that I can open some websites in the browser without any issue, such as Bing, wordpress, quora.
However, pinging these websites does not give good response:
For other websites like Facebook and Google, Google News, they open rather slow in web browsers and sometimes does not even load.
Pinging them also yields poor result:
After changing DNS server into Google’s 18.104.22.168, the problem remains.
This should be an issue with NUS network as websites such as Facebook and Google loads on my phone(with 3G connection) in usual speed.