What causes the network connection to lag in Windows 7?

Question

WiFi

Good afternoon. I ask for help in solving the problem.
Windows 7 Pro is installed on the computer, recently there was an unpleasant problem with the wireless connection. With the same frequency, there is a large delay in responses over the network. When pinging, it looks like this:
Packet exchange from 8.8.8.8 with 32 bytes of data:
Reply from 8.8.8.8: number of bytes=32 time=7ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=7ms TTL= 58
Reply from 8.8.8.8: number of bytes=32 time=755ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=7ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=5ms TTL=58 Response from 8.8.8.8: number of bytes=32 time=8ms TTL=58 Response from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Response from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Response from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=5ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=6ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=595ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Reply from 8.8. 8.8: number of bytes=32 time=6ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=6ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=7ms TTL=58
Reply from 8.8.8.8: number of bytes =32 time=4ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=5ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=4ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=439ms TTL=58
Reply from 8.8.8.8: number of bytes=32 time=7ms TTL=58
Reply from 8.8. 8.8: number of bytes=32 time=4ms TTL=58
At the same time, there is no such problem on the ethernet card installed in this computer. I tried to reinstall the drivers for the wi-fi card, checked the system for viruses (no viruses were found), did not install any specific software, all updates were installed. I thought that probably the problem lies in the malfunction of the wireless card itself, but when booting from the LiveCD, this problem is again not there. Also, this trouble is not on other computers that work in this wi-fi network. Help to localize the problem, I really want to understand what makes only the wireless network connection lag.

Answer 1

In general, the problem was solved by sequentially disabling programs from auto download. The connection was so affected by the Viber application. After turning it off, everything went back to normal. But what about when there are a lot of applications? Really it is impossible to learn what program so loads connection?

Answer 2

Windows Resource Monitor?
Although the symptoms are more like an iron problem. For example, the driver on the machine selects a clogged caenal

Answer 3

A typical problem for situations in a very noisy WiFi environment. If the channel setting on the WiFi router is set to "Auto", then the router periodically jumps to a new, freer channel. The WiFi adapter is also forced to jump behind it, which causes a delay.
Set your router to a fixed channel.
Also update the drivers for the WiFi adapter and make sure that it is in the reception area.

Answer 4

Process Monitor will show resource usage: https://technet.microsoft.com/en-us/sysinternals/p...