Alright, necroing this thread a bit.
The culprit was the Quadro 1000m /540m, it was on its way out. Replaced with a m5100 2GB some time ago (similar to 7770), everything has been snappy since.
Im curious if there are any other tweaks for getting the most out of my browser? I dont care about the hit on the hardware, this is mostly a school computer with some games on the side.
Biased rPGA and MXM 3.0A/B Elitest.