I have 30 Mbps DSL connection. For the past year it was working just fine. But few weeks ago I have noticed some strange slow downs - mainly on Wetransfer website which I am using very often. Small files would download for hours now. The same happens with many video/photo stock websites like Videoblocks or RockeStock, which I am using a lot. There is also a problem with 9GAG website. Most GIFs and images won't load or load extremely slow. It happens with all the browsers (tried on Firefox / Opera / Vivaldi / Chrome).
Now goes the best thing - I have recently tested just for curiosity new free VPN mode which is now available in Opera browser. And magic happened. It turns out all websites are working at full speed, download is also as fast as it used to be. So I tried to turn off VPN, while staying in Opera browser - immediately everything slows down.
I also tested connection at online DSL speedtest websites (both with VPN off and on) at it shows correct results, as usual.
What can be possible cause for it?
I am on Win 10, use built-in Defender and Malwarebytes Antimalware. I didn't install anything recently, the scanners didn't show any threat.
Thank you in advance.
Edited by zenon90, 10 February 2017 - 03:06 PM.