Recording is Jumpy and Doesn't Sync

[MikisSunshine Creates]

I created a small scene using my iSight camera on my iMac and have it nicely positioned to do a pic in pic. It shows me in the upper right side. However, before I even start recording it's jumpy and blurry and what I say doesn't sync up to what you see. I have no idea what's wrong. I'm running MacOS 10.13.6 High Sierra on a late 2009 iMac. Can someone help? And if you need more info, just let me know.

Here's the logfile though I haven't even started recording yet. https://obsproject.com/logs/AAzdWbW1BAJMz_V0