STEPS TO REPRODUCE 1. Place an audio+video track on the timeline 2. Place an additional track (video or audio+video) on the same time as the previous tracks 3. Watch the segment with multiple video tracks internally, or render the video and play it externally OBSERVED RESULT Audio becomes significantly quieter at the part where the 2 video tracks are playing, even when the additional video tracks are disabled, with the effect being much more severe after rendering EXPECTED RESULT Audio volume remains constant regardless of video tracks playing SOFTWARE/OS VERSIONS Windows 10 ADDITIONAL INFORMATION Not fixed by clean reinstall