Windows 10: Inconsistent speedtest.net results (slow in Firefox and Chrome)

I've been thinking my HP laptop was a bit sluggish lately. After the latest Windows 10 updates, I ensured all drivers are up to data, had clear out, deleted cookies and cache etc. Ran superantispyware, malwarebytes and ccleaner. All clear. I then ran speedtest.net in Firefox and also Chrome which I both use. I was getting about 30 Mbps download speeds. My package is for 100 Mbps. I then ran the test in Edge (which I don't normally use) and this gives 110 Mbps. I then ran the Windows 10 Speedtest app, this also gives 110 Mbps. I have run firefox in safe mode, switched hardware acceleration options etc, nothing changes. Have even done a full settings reset in Firefox. Everything is set for System no proxy details. Wired ethernet. Nothing else running at the time. Is there a reason/solution why Chrome and Firefox seem slow on the laptop? I have a similar setup on my desktop and this gives me 110 Mbps across all 3 browsers. Any ideas? Thanks.


EDIT to add; If I start Firefox by "Run as administrator" I get about 70 Mbps. So Better than 30 but still not 100+. It's WIndows 10 Home and I am an administrator so don't know why this makes any difference but maybe it adds some clues?

:)

 

Firefox or Chrome in Linux?

Chrome hands down, Firefox works fine but its slow, and Opera is the same.

 

Explorer, Chrome or Firefox ?

IE11 has adblock easy list too.

ie http://www.iegallery.com/en-us/trackingprotectionlists


Altohugh my no1 is still FF, the only thing that kinda sucks is it doesnt have full 1080p 60fps support @html5 (max 720p), IE11 plays that fine np.

 

Windows 10 - Chrome and firefox are not working

This helped me with Chrome but not with Firefox.

I opened Control Panel>Troubleshooting>Programs>Advanced, Run as Administrator and then went through the steps. My problem was the Chrome wouldn't start at all, so I went through the steps and it asks what program you're having problems with, I chose Google
Chrome, it'll go through a short diagnostic and then give you the option of Troubleshoot Program & then it gives a list of problems. I chose the first one: This program worked in earlier versions.... then click next, I clicked Windows 7, then next and it did
it's little fix. I tested and Chrome opened up just fine.

No such luck for Firefox, though.