Hello guys, I'm new to the forums but I hope you could help me out with my problem.
I have Planet modem ade-4400 linked to a Digitus ethernet Dn 5001a that I use to connect my 2nd PC.
The problem is that everytime, both PCs are connected I constantly get lag spikes while playing games.
Also, seemingly on random occasions, no matter what programs I run in the background my connection gets disabled with a yellow exclamation mark over my network icon. I get a "The default gateway is not available" error once I troubleshoot, and the connection works fine afterwards. However, recently after I updated the windows I think, I get another error that says "The connection between your access point, router, or cable modem and the Internet is broken" along with the gateway one. Also, recently, I started having lag spikes regardless of the other computer being connected to mine after the error, and once I turn on my pc. Could it be somehow related to Microsoft security essentials? Since I've installed it at about the same time when the lag-after-the-error started happening. Error seems to happen more often when I watch something on the internet, or when I quickly browse through the web-pages, or when I'm downloading something.
I'm using Windows 7, and another thing to note is that the other computer DOES NOT receive these kinds of errors, and I do believe it does not lag while playing games.
Any thoughts on how to fix these problems guys? The lag after the error and after I start up my pc goes away after some time. I'm sorry for such a bad written post but I'm from Eastern Europe and I'm not exactly a computer guy. If any other info is required just ask me. Thank you.

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