It might have something to do with my PC (i7 x220) but I cannot stand the Firefox viewer for anything but plain text. I find it very lacking in terms of perform

It might have something to do with my PC (i7 x220) but I cannot stand the Firefox viewer for anything but plain text. I find it very lacking in terms of performance compared to a native pdf viewer. Everytime a somewhat complex pdf opens up (mostly formulas, few images), the fan begins to rev up significantly..