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Slow & spotty internet- Problem w/ modem or internet speed??

Hey guys, I would really appreciate any insight here, as I am a serious amateur. I have issues with the speed of my internet, and after numerous calls and upgrades, there has been little improvement.

First, I have internet through Time Warner Cable, and the "extreme package" I have is supposed to be up to 30/5MBps. The modem/router I use is the one they gave me- SBG6580 D3.0 AWG Modem Gateway, which is directly connected through cable to our Apple desktop. My family lives on the 2nd and 3rd floors of our multi-family home, and the router sits in the center of the 2nd floor. There are a MacBook and 2 iPhones using wifi on the 2nd floor as well. On the 3rd floor is where the signal strength is usually weaker, and there are a PC laptop, a MacBook, an iPad and 2 iPhones using the wifi. I suspect the age of the PC laptop (2008!!) has a lot do with its slow internet speed and loss of connectivity, but I have also done some research and read that the particular modem/router I have is not praised for its wifi.
So, I am wondering if anyone has any tips at all on how to improve speed.
Right now I am thinking about getting a new router for the wifi and putting the modem into bridge mode so it's just a modem. If this is the best course of action, can anyone recommend a router? Also, is an upgrade in internet speed a good idea? The next and highest package is 50/5Mbps, but I feel that Time Warner is not even worth the price. Maybe it's time to look into Verizon FiOS. For this many devices, and many of which stream a lot of Netflix, what would be a good internet speed?
Thank you!!

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All Answers

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Shared means just that.

In reply to: Slow & spotty internet- Problem w/ modem or internet speed??

All it takes is one bad player and your WiFi and connection is going to be as bad as you wrote.

I had the ATT fios but found their DNS to be pretty bad. Google "Why use google dns" to learn what I did.

If you want speed you'll have to get in visual range of that router and kick everyone off WiFi. Maybe everyone off the internet.

-> More about the 2008 PC. Sure, it could have hardware issues. But you gave other clues it might not be that.

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So a new router is my solution?

In reply to: Shared means just that.

I just double checked my time Warner acct and my connection is actually 200/20Mbps. So I feel that the speed should really not be as bad as it is.

I definitely can't kick everyone else off wifi... So maybe I need to look into a new router.

I have no idea what DNS is but I will look into it.

Thank you!!

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Unless you kick them all off for a test run.

In reply to: So a new router is my solution?

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