im having slow speeds and was wondering if i need a new network adapter or if i need to fix a problem on my pcTry speedtest from Ookla and that will tell you what your getting through the wires...
www.speedtest.net
Once you know what speeds for upload, download and Ping are in your wires you can then tell if your router or cables need a look at.
Also get in-touch with your telecoms provider as to what speed you should be getting (and pay for).