Apple

Desperate last attempt after literal months of troubleshooting

I've tried everything so trying it here as a last resort. I have a Philips tv (75PUS8807) and a 3rd gen Apple TV 4K with wired internet. There's a Samsung q900a soundbar for audio.

No matter what combination of setting I try, the video and audio are never fully in sync. The video is ahead slightly of the audio with passthrough and even more out of sync with LPCM.

I've tried:
Buying a new Apple TV, using tv speakers to confirm delay (without soundbar it's the same), reinstalling all apps, all HDMI cables are 8k 2.2, Buying multiple audio switches and eARC devices to circumvent any codec issues, resetting ATV, match framerate and dynamic range both on and off, unplugging all HDMI ports and turning off the power for a couple minutes, having all upscaling and smoothing turned off, audio syncing via ATV sync feature and did multiple internet speedtests to ensure stable connection.

The delay is there in all apps, I now have a HDFury Arcana passing through the HDMI and delaying the audio 100 ms which makes it a lot better... But this really shouldn't be necessary with this equipment...

Anyone else having this issue? TV HDMI ports are fine, PS5 video and audio responds fine. TV is not broken because the built in apps are perfectly in sync so it must be something with the ATV > Philips connection? Both support HEVC and Atmos?

Who can save my sanity? Anyone?