What is your network latency while stuttering?

I don’t have a problem myself, but I read a lot of post people who say the internet is fine.
You have 100, 250 mb. But I’ve never read about the important value of latency.
My experience and the amount of feedback tell me that a lot of people don’t even know what that is.
The latency can be very high, especially in a WLAN. A combination with a unmanaged switch and video streaming can worsen your own network extremely.