Question Internet goes out randomly every few minutes

May 31, 2020
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Hello, so about a month and a half ago I encountered an issue where my internet would go out for a few minutes and then come back. I used to have an all in one modem/ router and I noticed it would sort of restart and the DS/US and the Online light would begin to blink. After a few minutes it would connect to the internet once again and it was working, but it would keep doing that for the rest of the day. I called my isp, spectrum, so many times and I’ve had a tech come out like 5 times. No luck, one tech replaced all the lines outside the house another replaced the modem/router combo with another, and the others were just plain useless. The last tech that came however replaced the modem/router all in one with a separate modem and router setup and just like that the internet was working for the rest of the day. The next morning however I tried to do some gaming and I noticed after about 20 minutes of gaming my connection was lost for a few minutes. This is happening on all of the devices so I know for sure it’s not my pc. I’ve noticed the online light on the modem was blinking white/ blue. For my modem I have the E31T2V1 DOCSIS 3.1 eMTA and for my router I have the RAC2V1A. What I’ve done to fix the problem is resetting the modem, however the fix only lasts about 20 minutes when it begins to fail again. I don’t understand why spectrum hasn’t been able to fix my internet, such an embarrassment at this point. If anyone could take time out of their day to PLEASE help me that would be super appreciated, thank you so much for reading this and I hope someone can help me.

PS: I’ve noticed this only happens when I’m on my pc and trying to game. Is my pc triggering the modem to restart? Some how? I don’t think it’s done it when I’m NOT on my pc.

Here are the manuals for my modem and router:
Modem manual: https://d15yx0mnc9teae.cloudfront.net/sites/default/files/Spectrum D3_1 eMTA QIG_manual.pdf
Router manual: https://d15yx0mnc9teae.cloudfront.net/sites/default/files/RAC2V1A Arris Wave 2.pdf
 
May 31, 2020
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My guess would be your modem is overheating. Have you ever touched the modem when your internet goes out, to see how hot it is? Is the modem in a well ventilated area?
Yes the modem and router are good on heat. They’re new. It’s weird cause it ONLY happens when I’m using my PC which is hooked up via Ethernet.
 
Yes the modem and router are good on heat. They’re new. It’s weird cause it ONLY happens when I’m using my PC which is hooked up via Ethernet.
When you are having this problem have you ever tried disconnecting the ethernet output of your modem from the router and plugging it directly into your PC, bypassing the router to see if that make any difference?
 
May 31, 2020
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When you are having this problem have you ever tried disconnecting the ethernet output of your modem from the router and plugging it directly into your PC, bypassing the router to see if that make any difference?
No I haven’t had a chance of doing that mainly because others are using WiFi and I don’t mean to disturb them but I’ll try to do that. But it’s weird because like I said it only happens when I’m on my computer connected via Ethernet (I don’t use WiFi only Ethernet) and the modem lights starts flashing white and blue. Is there something in the router settings? I’m not too internet savvy.
 
No I haven’t had a chance of doing that mainly because others are using WiFi and I don’t mean to disturb them but I’ll try to do that. But it’s weird because like I said it only happens when I’m on my computer connected via Ethernet (I don’t use WiFi only Ethernet) and the modem lights starts flashing white and blue. Is there something in the router settings? I’m not too internet savvy.
How many users are sharing the connection? Is the problem just too many devices competing for bandwidth? Your router will likely have QOS (Quality of Service) settings you can turn on or off.

 
May 31, 2020
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How many users are sharing the connection? Is the problem just too many devices competing for bandwidth? Your router will likely have QOS (Quality of Service) settings you can turn on or off.

There are 5 phones, 1 tablet, 1 smart tv, 2 laptops and 1 desktop. Everything is WiFi other than the desktop which is Ethernet
 

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