My money would be on you having an ATI graphics card and that being a good bit of the graphics jank.
2013 intel chip+integrated graphics runs like a champ and with lower memory usage than chrome (though I am blocking all the ads, which does significantly change performance everywhere).
They're nVidia 750 Ti's (Asus). Sure, not exactly cutting edge, but work just fine on my Windows 10 machine with a similar spec (which I also game on and get decent frame rates even at 1080p resolution). Chrome is perfectly fine, it's always been Firefox that's the let down, even with the new Quantum releases. Trust me I'd love to abandon Chrome, but it just isn't realistic from a productivity angle.
