Adjust refresh rate messes up lipsync?

Single Board Computers Odroid N2/N2Plus/C4
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Hello, my system is Odroid N2 → Denon AVC-X3800H -AVR → TCL 98R754 -TV.

When using static refresh rate (eg 23,798 for movies or 50 for tv-shows) lipsync is ok for all files that match the refresh rate set in Kodi settings. If I use adjust refresh rate and white listing, lipsyc for videos that need to use different refresh rate than default, is out of sync. Why is this happening, and is there a way to fix this?

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Oh it seems that adding delay about 3s after changing refresh rate fixes this. For some reason my system is not able to get lipsync ok without that delay.

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https://wiki.coreelec.org/coreelec:ce_support

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Sorry didn´t go into very big measures on troubleshooting this at first. Even kodi wiki is not that clear about that why this “Delay after change of refresh rate” -setting is used. Gladly I found that it fixed my problem after testing different times with it. Hope this helps someone else with same problem.

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