Hello, it seems that you are using "Record microphone into separate audio track" feature. What you should know about "Record microphone into separated audio track" feature is that it creates an additional audio track in your video file. It does not create any additional file. While you are playing b...
Make sure that hardware acceleration is on.
Go to Action! main tab and select NVIDIA NVENC from hardware acceleration list.
If your issue still persists then please report this to our technical support via support@mirillis.com