Not EU, but NA... I just updated to 2023.6.8 and can report that the issue with SiriusXM and FM radio appears to be fixed. I tried multiple volume changes both slow and quick as well as equalizer changes for both sources. I did notice a click when moving an equalizer slider but not after leaving it.EU Tesla Owners, 2023.6.8 has been released. Please report back if this fixes the SiriusXM distortion problem on your car. The fix is not listed in the notes. Thanks.
Of course, this is only a minimal test and since an update involves a reboot (which would fix things for me temporarily) I will continue to test over the next few days.