I connected my old Samsung Soundbar E551 to the C8 via optical cable, but unfortunately I now have a slight delay (no longer lip-synchronous) :-(
Do I have to adjust anything? Does anyone have experience with a connection via optical cable?
Unfortunately, the E551 has no HDMI ARC input, so this option is not available. Joey, then there would be Jack, but well...;-)

Question

I connected my old Samsung Soundbar E551 to the C8 via optical cable, but unfortunately I now have a slight delay (no longer lip-synchronous) :-( 
Do I have to adjust anything? Does anyone have experience with a connection via optical cable?
Unfortunately, the E551 has no HDMI ARC input, so this option is not available. Joey, then there would be Jack, but well...;-)

Answer

In the sound settings, under AB-Sync. The timing between picture and sound can be adjusted, so that it should be possible to synchronise picture and sound.

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