I am very new into the Ubuntu community, I made the switch two days ago and I'm still getting used to everything. However one of the first things I noticed is that since I've been using Ubuntu, my Internet (Wifi) is significally slower than it was on Windows until wednesday. obviously I searched the problem before here and I saw several ideas, like this one which I all tried, but nothing seemed to work. I'm not sure which information are relevant but if you need to know more, just ask and I will look it up for you.
Thanks in advance
EDIT: I discovered that at least a partial problem seems to be the Wifi Repeater I am using, which is the TP-Link TL-WA854RE Wireless extender. Still not sure about what exactly is causing the issue here and/or how I could fix it