Secondly, if many people use a line, does anyone watch movies and download things online? If so, it is normal for you to delay high.

Finally, if one person uses it, or many people use it, and no one downloads anything or watches movies online, then the card may be caused by a virus or a Trojan horse!

If all the above problems are eliminated, then the long-term server problem

I'm from Jiangsu, and the bandwidth is 1 megabit. It doesn't matter, the delay of both switches is normal!