Update: I finally found what's doing it on my setup.
Video files I'm playing are mostly Mpeg2-TS 1080i
The default de-interlace setting (Auto) doesn't work properly: skips frames and sound get out-of-sync most of the time.
Manually trying each setting, I've found that both MMAL - Advanced are doing this, but the 2 MMAL - BOB work perfectly for what I need.
I'm concluding my tests with this release... as I just found this is not exclusive to LibreELEC.
I just tested OSMC with latest nightly and I'm getting exactly the same result. So it must to be something in Kodi 18 (also 18.1RC1) instead.
Connection is Wired.
Tried increasing the buffer settings - Same result
Disabling the HW Acceleration for MMAL loaded all 4 cores to 85-90% (vs 15%). Result is still skipping frames, but less than when it is enabled.
Enabling HW Acceleration for OMXPlayer is way better at frame skips, but audio can't stay sync'd.
I suggest you back your settings before the upgrade. Easier to revert after 
Yes, I do have the MPEG2 License, and running vcgencmd codec_enabled mpg2 shows it is still enabled after the upgrade.
From memory, CPU utilization wasn't over 15%... but I will recheck tonight to be sure.
Other thing I might try is playing with the Network Buffer settings and see if it can improve things a bit.
Hello,
I'm taking the opportunity to post my logs in this thread instead of opening a new one.
I get the same thing, but on a Pi 2 once I upgraded to 9.0.0.
Happens while playing Mpeg2-TS via TVHeadEnd PVR Plugin
v8.2.5 Worked perfectly with the same settings
(Vanilla install, PVR Plugin added + MYSQL/MariaDB Advanced config)
