Microsoft Teams - Can't hear voice for few secs once I join

[rbudideti]

Once I join teams meeting I can't hear voice and other person will not hear my voice for few secs. I will need to wait for at least 30 secs to pick the voice and I'm on Ver 1.3.00.19565 (64-bit) on Windows 7. Any idea on why his happens?

[#2]

What’s your microfone and speaker device?

[#3]

Microsoft System Speaker (Driver Version: 6.1.7601.24441)

Microphone - Realtek High Definition Audio (Driver: 6.0.8907.1)