I have an M7135 laptop with a Dell 1705 WIFI adapter. Bought last summer while up north. All was well. Then we went south for winter.
We travel up north for summer and before we left last month, I was getting near 50Mbps speeds with my TWC ARRIS Gateway(see repair below). Up north we have a similar setup with Comcast - 50Mbps speeds on a Cisco XB3 gateway. Talking about downloads in all tests.
I can run my laptop alongside my wife's which is similar, just a little smaller footprint, and she gets the 50M and I get around 3M. In addition to the slow download, the test itself takes about a minute to run and it gets slower as the test crawls along.
I take my laptop to relative 1/2 mile away again with a similar Comcast internet setup of 50M speeds.
There my laptop ran over 50 Mbps for download! Brought it back home and still 2M download and slow running test.
We are using the latest Comcast Dual Band Gateway XB3 units up north.
Needless to say I have exhausted resetting and altering my setup and clearing cache data, etc, to no avail. I cannot isolate whats unique about my laptop that could cause this just because we went north.
I initially setup my laptop up north when I bought it last year and speeds were fine till we went back south for winter. At the home down south I started seeing slow download speeds. Ultimately DELL had to restore laptop to factory defaults to resolve. Also motherboard and adapter. This got me 50M speeds down south. Then all was fine down there but now any definitions for setup up north were wiped out with new motherboard.
So now I am back home where I started last year and seeing slow speeds. Last year all was OK as I said, Its like this laptop wants to stay in one place - although a test at nearby home where I am now show great speeds.
Any ideas what to look for as a cause for disastrous speeds? Understand my dilemma?
Get it running great at one site - take to another - bad speeds - fix that with Dell and OK again - take back to original site - bad speeds come back. But works OK nearby.[:(]