I use OBS to show my splits since they don't show on Game Capture HD. But my audio is seriously out of sync and I have barely a clue how to fix it. I reckon there is at least a 15 second delay between what I am saying on my mic and it coming through on the recording. Can anyone help me out?

That is very bizarre...When I talk, it's synced up fine on stream.

Unless you're talking about listening to yourself on stream, which then there's a delay because of the servers. But I don't think that's what you're talking about.

Are you console gaming or PC gaming?

I'm streaming a Sega Mega Drive console. I don't have any issues going straight through Game Capture HD. But when I use OBS purely for the purposes of showing splits, the audio is terrible. Nah it's not the Stream, I don't even log in. It's how it's being recorded. I'm fairly sure it just needs a settings tweek but I have no idea what to adjust.

It seems like OBS is fighting whatever you normally use for streaming. Try disabling all the sound settings for OBS since you're only using it for splits. Or at least the mic.