i come to a point today.

[deama]

There's a piece of software called WinMTR that allows you to track packets to a specific host to find out if you get any dropped packets or weird behaviour.
Download WinMTR, then in the host section type in 8.8.8.8 (google dns server, you can try other ones too), then press start and just keep it on for a day. If you see above 0% packet loss in the Loss % column, then that might be a problem.

The software monitors all the different jump points that your packets have to make to reach the host destination, so e.g. if you want to go to youtube, your packet first has to go to the internet box outside your house (if it works like that for you) that is a type of switch or big router for your neighborhood, then it goes to your ISP exchange point, then after that it can do a few more hops until it reaches youtube.com. The WinMTR will monitor this entire route and tell you if there were big packet loss between your house to your ISP or ISP to youtube etc...
Might help figure out the problem, e.g. if you get lots of % loss packets from your house to ISP, then probably something wrong with the wire from your house to the ISP, or from your house to the local neighborhood switch box or something.

PS: Ignore the one that says "no response from host" in hostname column.

[dervu]

Isn't it better to use UDP packets like pingplotter does?