The only options I have in my modem/router's Compal-ch7486e-70684 (CH) setting is QoS, which I have turned on since months ago.
Chrome experiences the same problem.
After having switched to startech usb 3.0 adapter the slowness went away (about 2 months ago). I concluded that my CPU is poor and the adapter now did some of the computing power. But then the slowness came back
Was connected to my WIFI (DLINK DAP-1522 connected to CH). Google calendar took a really long time to load. Switchted to my Samsung S3's hotspot. Gcal was quick to load. Then switched back to WIFI and it was as quick. On the other hand making a Facebook post took a really long time to load via WIFI but was quick via the hotspot.
If I have the slowness, and detach-attach network cable the slowness is gone.
22 Mars 2015
Closed almost all processes, it did not help
Disabled all firefox addons. This made problem go away.
Removed cookies in Firefox. It's the same on WIFI as corded. Power options are set to high performance.
But now it's back again.
Before making this post there has been 1 day since I made a new profile in firefox. This seemed to help in the beginning, but now I see signs the slowness is creeping back. Some pages definitely takes too long to load.
Is this simply a case of too poor hardware?
The laptop is connected to external monitor via HDMI @ 1680 x 1050.