When I first got this, it would barely run. I did what you would expect, I made all of the graphics options low, and it still wouldn't run. Eventually, I got this tweak
running, and it improved performance slightly. Then I prioritized Planetside 2 as high on my PC, which improved it slightly again. Eventually, while searching the options menus for the source of my woes, I found the "render quality" slider. After adjusting it to 75, I found it ran better. I now play at render quality 55 on my laptop.
TL;DR: I was a dipshit and didn't realize render quality was what was giving me lag spikes.