No center channel in digital audio

I've had an Apple TV 4K for a few years and just in the last few days began experiencing no center channel audio in digital sound 5.1. All other speakers are working. The center channel seems to sometimes come back after its been left on for a while, but I am having the issue in every streaming app.

The Apple TV 4K is connected via HDMI to a Pioneer Receiver that acts a switcher and sends signal to an LG OLED TV, also via HDMI. This setup has been connected for over a year with no issues before this. I have confirmed its not the receiver or speaker since there are other video devices connected to it that do not have the same issue.

I have tried taking the audio format off "auto" and set it to Dolby Digital 5.1 but that doesn't fix it. I did some searching and only found people saying take it off digital sound, but that is not correcting the issue, just switching to analog Pro Logic audio, and not what I would prefer. It had TVOS 17.3 when this began, and I updated to 17.4 with no change.