Hoping i can get some help from someone who has had a similar situation.
I am having no issues streaming video in any quality. The problem is with the audio. There is no audio issues when using netflix, youtube, etc. However when using plex I can only get audio when specifically choosing 720p HD 2Mbps. There will be no audio in any other quality setting regardless if its lower or higher.
Setup is a chromecast hooked up to a projector. I have also tried using a audio extractor with optical audio with the same result. I do not have this issue when using a TV. Any help is appreciated. Thank you