are you using the b.net client to launch your wow?

Yes. Right now my game stable but I can try add more OQ friends and try to reproduce.

Same issue.

1. Game worked fine at first launch with 1.9.7 (Was browsing OQ for almost 30 min)
2. Got first freeze immediately after quitting first oq group. Then proceed having it every time logging in with 1.9.7 enabled (Fully loaded -> Game animations started -> 5-10 sec -> freeze)
3. Downgraded to 1.9.5 with fixed my game. Removed all OQ friends.
5. Reinstalled 1.9.7, so far game been stable
On my PC its looks like game freeze with WoW-64.exe fully taking one CPU core.