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Multi-viewer Audio leading video

I recently upgraded to version 14 after being on 7.2 for a very long time. We had been using the Extenal Display Output using a second display output on our video card to distribute the live view throughout our church via BMD devices using SDI.  It had all been working very well, but after updating to 14, the video lags behind the audio stream by about 1/4 second.  The only thing that changed in my system was the version of Wirecast.

The issue occurs regardless of whether we are Streaming, recording or neither.  The audio sync is perfect in the stream at the same time that the Multi-viewer output is video-delayed.

Multi-viewer configuration is set to full-screen live. Canvas size is 720p @ 30fps. 

The CPU never goes above 20% (usually sits around 7-11%). Memory is sitting around 20% usage and video card is between 25%-40% usage. 

System Specs:

  • OS: Windows 10 Pro 20H2
  • CPU: Intel(R) Core(TM) i7-6850K CPU @ 3.60GHz, 64bit, 32GB RAM
  • Video Card: NVIDIA GeForce GTX 1660 SUPER
  • Wirecast Version: 14.1.1 (1317.b66ac4e0) (Standard license)
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