First you’ll need to download OBS Studio, fxsound, and voicemeeter
- Open fxsound, make sure computer speakers are set to fxsound
- Select desired settings and/or preset
- Set fxsound output to voicemeeter input aux
- Open OBS
- Go to OBS settings, set desktop audio to voicemeeter aux input and Mic/Auxilary audio to a voicemeeter output option
- Record your content with OBS Studio. Now when you listen back, it should have all the FX sound effects captured in the video!
credit to @IrONHEad , I saw their reply on how to do this but got confused and decided to make a simple step by step version. Enjoy!