Wicked fast internet speeds become wicked slow when faced with downloads?

Hfooooo

Reputable
May 24, 2015
6
0
4,510
I just got home from college about two or three weeks ago, and I've been having a few problems with my desktop computer. Foolishly deceiving myself into believing that they'd all been fixed, I've run into what seems to be the final, yet frustratingly insurmountable barrier yet: WiFi. My mom's apartment is fortunate enough to be supplied with Google Fiber, and every once in a blue moon, I'll catch glimpses of its raw power. It is amazing. The setup I'm working with now is with a router, wifi range extender, and a brand new PCE-N53 Wireless-N600 card. The reason I bought a new card was because I figured something must be wrong with my extender (which I had purchased because I needed something close to plug into with an ethernet cable), so I thought wireless would be the way to go. On one hand, my plan worked. I can use google chrome and visit web pages at above-average speeds. On the other hand, if I try opening Steam, GOG Galaxy, or (sometimes) Spotify, my internet reverts to near-nothingness.

Speed tests say I'm running at about .24 download speed and .10 upload, while I'm supposedly getting full service from my router (it should be noted that I can bounce between my router and extender at will, but neither seem to have any effect on connection either way, so I think my extender might actually be useless). Other computers in my house seem to be working fine, and there was a short period (about an afternoon), where my mom was watching Netflix in one room, I was browsing the web, and The Witcher 3 was downloading at the speed of LIGHT on GOG Galaxy. I've found through trial and error that if a I open GOG Galaxy or Steam when a download is present, my internet flunks out.

I'm honestly not very computer-savvy, but I would be sooooo grateful if you Hardware Heads could help me out of this abysmal pit of WiFi despair.
 

Hfooooo

Reputable
May 24, 2015
6
0
4,510
Furthermore, if I'm not downloading (or running a speedtest, which makes this tough to gauge), my internet seeeems to be working at proper speeds.

please help
 

althex

Distinguished
Oct 16, 2011
70
0
18,660
Something to remember, whenever you download something, either on WiFi or on cable, it saturates the line speed. A good tool to check this is Networx. It can record your line speed with it's speed meter function.
 
I would try to remove the extender. Just having it turned on running in repeater mode greatly reduces your bandwidth. It pretty much send a second copy of any data the main router send right back over the top of the same radio channel. As traffic load increases you more than double this traffic.

You should never run a wireless repeater unless you have no other options.
 

Hfooooo

Reputable
May 24, 2015
6
0
4,510
I've turned off my extender and run some tests to see what can and can't run under these conditions. After some trial-and-error, I came to realize that Steam works if I pause my downloads. Something is reacting weird to downloads in my computer, keeping browser and streaming speeds nice and quick until ANYTHING starts downloading online. Steam tried running a 1600 kb update yesterday, and it was downloading at around 100 kb every three seconds, while simultaneously slowing down my computer.

Does this information make the problem more clear to fix?
 

Hfooooo

Reputable
May 24, 2015
6
0
4,510


Is there ever a reason that downloads suddenly saturate line speed a LOT more than usual? I'm used to Steam downloads having an effect on my connectivity, but this is outrageous.
 
I hate pc software there is not easy way to tell what is messing things up. If you have a board with "killer" device those tend to have policies that favor some types of traffic over others. The resource manager may give you a clue if it is something other than network issues. You can also see how much traffic is actually running.
 

althex

Distinguished
Oct 16, 2011
70
0
18,660


Cloud based storage apps like Dropbox & Google Drive can create situations that you're not downloading anything, but your internet connection is flooded with data being transferred. Slowdown to 100kbps is a real problem though. I would suggest shutting down any other devices connected to the network except your device & start testing download speed with Networx. If speed seems fine, then it might be another device on network causing the slowdown. A good test with Networx would be to not be downloading anything & then run the speed meter to see if there's background apps using up bandwidth.