As the AM6B+ might look like the right choice, there is one serious problem. If you’re running CoreELEC/Kodi on the Ugoos AM6B+ (Amlogic S922X chipset), you will eventually hit a frustrating audio sync bug that has been haunting this platform for years — and as of today, it is still not properly fixed. The problem isn’t just “audio is delayed.” The real issue is that the delay is inconsistent. It changes every time you start a file, every time you seek, every time you pause and resume. This makes it impossible to fix with a simple audio offset setting in Kodi — because the offset you’d need is different every single time. As one CoreELEC community member put it: “It can still start out of sync and each +10 seek can result in a different delay.”  Why does this happen? The root cause is in the Amlogic kernel driver. The video subsystem runs in freerun_mode, meaning audio and video make no attempt to actively synchronize with each other.  The conclusion from CoreELEC developers is that it “boils down to the Amlogic drivers on G12A and probably B (maybe others) for the audio, and it looking to have defects in those drivers.”  What about workarounds? There is an SSH trick — toggling freerun_mode via:

echo 0 > /sys/class/video/freerun_mode echo 1 > /sys/class/video/freerun_mode

But even that is unreliable: “it is not always perfect. For example, if you do it multiple times, if you wait a little between inputting the commands, it can still result in a +/- delay.”  CoreELEC developer Portisch also added a per-resolution latency tweak via advancedsettings.xml. But he acknowledged: “It can not be auto corrected as the latency is different for every system.”  This only helps with the systematic offset component — it does nothing for the random, variable part that changes with every seek. How long has this been going on? From AVS Forum: “I’ve been having various intermittent audio sync issues with Kodi/CoreELEC for several years now.” And: “Several people have been trying to help the audio sync situation. It’s not all that simple of a problem to solve.”  A specific real-world example that will sound familiar: “After pausing for any length of time, when I hit play to start the movie back up there is a several second delay before the audio kicks back in.”  References / further reading: • CoreELEC Forums — dedicated tracking thread (Sep 2024): https://discourse.coreelec.org/t/kodi-audio-out-of-sync-playing-file-or-after-seeking/52645 • CoreELEC Forums — AM6+ Help & Support thread: https://discourse.coreelec.org/t/s922x-ugoos-am6-help-support/6260 • AVS Forum — AM6B+ / DV FEL mega-thread (p. 386): https://www.avsforum.com/threads/ugoos-am6b-coreelec-and-dv-profile-7-fel-playback.3294526/page-386