Random freezes, which did not happen in BS3 beta

I was using the Taiwan's beta version of BS3 and everything was smooth. Then it auto updates, and I frequently go to the website to download the latest build.

However since the release, I keep getting random freezes. I know it's BS3 only since other apps or functionality of my PC are fine. What's happening in BS3 that made it worse than the beta version?

My previous posts never got a comment, so I don't know if the devs are aware of this issue or not. I run BS3 on default settings and my spec are mid-high, never have a problem with any games.