Live Game Play Recording Software -- What Do I Need?

Hey @ItsYukiMe ! Thanks for your response! :)

So I've actually started with Audacity (still learning the software) for audio and OBS for recording game play; however, when I start recording with OBS, my game gets real laggy with playback--but it doesn't lag at all when I'm actually playing and recording. There's this encoding overloaded notification that pops up. Do you have any idea how I could get this fixed so that my gameplay and recording are in sync?