Aptx via Bluetooth does not work properly

/e/OS Smartphone Operating System
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1

Hello Community,
I have been using e OS on my oneplus 5 for a few days, the latest R release.

I noticed that the Bluetooth transmission with aptx does not work properly. The sound then sounds very muffled and too bass-heavy. If I turn off aptx in the Bluetooth settings, the sound is normal.
I only have one Bluetooth receiver that can handle aptx (Avantree RC500), so I can’t say exactly how it looks with other devices.

I have also reset the Avantree, but no improvement.

I had this over a year ago with my previous custom Rom (crdroid), but that was quickly fixed with an update.

Maybe someone can test this with an aptx-enabled device?

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2

Did you try Settings > System > Advanced > Reset options > Reset Wi-Fi, mobile & Bluetooth?

3

Unfortunately, it doesn’t help.
I have already reset the Bluetooth receivers.
And with the other custom rom, aptx still works perfectly (I have two Oneplus 5).

4

I am not good on Bluetooth. It would be good to know where exactly to look for a comparison beteeen the two situations.

Is the other LineageOS or Lineage derived, same Android version, perhaps give both build numbers in case it helps trigger where to look?

5

It is crdroid and it is also based on LineageOS and it is also Android 11.
The build date is one month younger. But, as I said, the aptx problem has not occurred since ~March.

6

Unfortunately, nothing has changed with 0.21 R. Aptx still sounds awful.
I just wonder what crdroid does differently…