Recommending Fraps in 2016... You should feel bad! I tried it the other day, it still kills the most resource friendly games.
I tried OBS but I could not get it to work correctly, I always got black screens, switched over to plays.TV and much happier. I did use Shadowplay for a while yet for me it seems to be buggy. It will record the last x minutes chosen and then sometimes just not work at all.
