Internet slowing to a crawl when one laptop connects

Cherrycola

Hi

Does anyone know who I might find out what's causing one laptop to slow down our wifi speeds to less than 1mb? We have fibre broadband with consistent speed of 11/12mb until this laptop connects. Ping increases from 11s to 1100s also.

I've turned off the Windows 10 p2p download, hoping that was the issue, but no.
Antivirus is up to date and hasn't found anything on a scan to point towards malware, there are no torrents downloading on this laptop, I'm stumped, what else could it be?!
The laptop is about 6yrs old, and upgraded to Windows 10 a few months ago.

We're only noticing the bandwidth issue now as we've moved house and don't get the same fibre speeds we used to, so the slowdown obviously wasn't as noticeable before but still happening.

Any help would be great.

bonzodog2

It may be that you have a 802.11N router, and the old laptop has a 802.11B/G wifi card. The router would slow down all traffic to 'G' rates if a @g@ device connects.

Cherrycola

bonzodog2 wrote: »

It may be that you have a 802.11N router, and the old laptop has a 802.11B/G wifi card. The router would slow down all traffic to 'G' rates if a @g@ device connects.

Ah ok, how would I find out if that's the case? #clueless!

Cherrycola

Our router has two connection options, 2.4ghz or 5ghz, most of our devices can connect to either, but the laptop can only see the 2.4ghz, is that an issue?

bonzodog2

Check properties for the wifi card in the old laptop (in Device Manager), or google it.
5GHz is 802.11A
If this is the problem you can get a different card for the laptop, depending on the OS version, drivers may be available.

Cherrycola

I think we've figured out its Google+ auto backup that's doing it, does anyone know how to switch it off on a laptop? Can't seem to find an option, apart from deleting the program.