@Elia A quick update. I received the debug firmware from TP-Link some times back. Provided required logs to them for debug. Afterwards they sent me a test firmware. This test firmware fixed the issue...

@Elia I hope TP-Link is working on this issue and release a fix soon. This is very serious issue, making device useless. I am getting dropped during voip calls, and router log show same as in this...

@Kevin_Z Hi, I am also facing exactly same issue. I purchased device in India. Can you please send me the relevent beta firmwar to try? regards, Virendra