I've tried a bunch of other PDF readers out there, including FoxIt and some others. Once in a while I'd run into a PDF file that these third party readers would not render correctly, so I ended up going back to Adobe Reader DC. Honestly, I don't see it hogging up any significant amount of resources on my PC.
If you're looking for a low resource footprint reader, apparently Sumatra PDF is another good one to try.
If you're looking for a low resource footprint reader, apparently Sumatra PDF is another good one to try.