This is the only acceptable procedure I can do for my desktop PC,
And it worked for a few minutes.
Then the problem comes back again.
(The problem seems to exist in 2022, UE5.02)
PS:
I happened to find a workaround for this problem.
[workaround]
1. I happened to find that the problem does not occur when using build-in speaker of one of my monitors.
2. I plug my speaker into the monitor’s microphone port.
3. problem solved.
PPS:
After finishing this PS’s workaround procedures. ‘Another problem’ happened to be solved as well.
[Another Problem]
When using UE in multiple monitors, if placing Map window in monitor 1,and BP window in monitor 2, moving nodes in BP monitor 2 will cause monitor2 to ficker.