My experience in this month (May 2017)

I arrived at the airprot 3 hours before the departure time.
I knew almost full flight by checking Expert Flyer.
However, there were short queues at both of economy and business.
Not bad.
Immigration and security were relatively smooth.

QR designated lounge was just a minimal, unstable WiFi, a very few AC outlets.
I moved to Priority Pass lounge near gate 1 that QR departed from.
This lounge had a good number of AC outlets and stable WiFi connection, but almost no food option.