WiFi seems faster than my ethernet - Time Warner Internet

This question is about "WiFi seems faster than my ethernet", with Time Warner Cable internet and apps. Hi there, it seems that the one computer I have wired up directly to the modem via Cat-6 cable is having a lot of issues lately accessing web sites, e.g. I need to refresh the web site several times before it all loads. My WiFi internet access does not seem to be affected.

Could I get suggestions and/or steps to follow to see what the issue could be and what I should do about it?

The router is a ubee DDW36C. I'm not sure if it was supplied by Spectrum or not. My computer is running Windows 7 Professional and was last updated about 2 weeks ago.

I will try to reply as quickly as possible to questions, thank you.

WiFi seems faster than my ethernet?