Recorded video's have developed a hissing sound/feedback issue

[larrydavid10]

https://obsproject.com/logs/kL53Zaa6o-qo3znv

Log file is as above.

I have been using OBS now for about a month to record videos for my youtube channel. Up until now there have been no issues with the audio. I have been using a yeti microphone. However on my latest video playback, I can hear a hissing/feedback sound. I have been doing everything exactly the same and nothing is set up any differently so I can't understand or identify what the issue is. Can anybody help? Thanks

 

[larrydavid10]

Further to the last, I have found a workaround by adding a noise compression filter to the audio. However I haven't had to do this previously so I'm curious as to why this is required now.