I was trying Action! Dixtory, bandicam, fraps... What else? And imo Shadowplay is the best.
FrapsGreat quality & recording without lags (only if you've got NASA PC)
Action!
Was the best from all, but i noticed some crash in older GTA's or in vegas - can't remember where - if i good guessing it was in the program and i was wonder why and i was searching long an answer for my question, on some forum I have found one finally, it was format problem, the program was recording new games without any crash except old games. Still not sure on 100% if it was this or other recording software.
DxtoryTotally sucks for me too.
BandicamPls...
So yeah, you choosed nvidia!