The video stutters when playing 23.976 fps videos on Libreelec 9.0.2. With Libreelec 9.0.0 the files play fine.
Hardware: Intel NUC D34010WYKH (with i3-4010U Processor)
Display settings: Monitor=Default, Resolution=1920x1080p, Delay after change of refresh rate=Off, Dithering=Off, Colour mgt=Off, Limited Range=Off
Video settings: Adjust display refresh rate=On start/stop, Sync playback to display=On, Enable HQ scalers above=20%, Allow hardware accel - VAAPI=On (All codecs=On)
Debug log on 9.0.0 (video plays fine):
Debug log on 9.0.2 (video stutters):
I tried with LibreELEC-Generic.x86_64-9.1.502 and got the same video stutter. I can provide logs for this as well if needed.