Issue is present in both official 9.2.2 binaries and self build from master
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LibreELEC (community): devel-20200414225037-837464c (Generic.x86_64)
LibreELEC:~ # cat /proc/version
Linux version 5.6.0 (hydro@ubuntu) (gcc version 9.3.0 (GCC)) #1 SMP Tue Apr 14 23:12:49 CEST 2020
The test is simply booting off installation media in live mode and playing a 1080p file from local SSD (ie. a saved YouTube video): payback starts fine but after a few seconds video freezes (interface and controls still work) and Kodi binary starts pegging 100% of one core:
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LibreELEC:~ # top
top - 07:02:41 up 2 min, 1 user, load average: 1.90, 0.77, 0.29
Tasks: 113 total, 3 running, 110 sleeping, 0 stopped, 0 zombie
%Cpu(s): 51.9 us, 1.2 sy, 0.7 ni, 43.3 id, 3.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 7340.1 total, 6674.0 free, 239.7 used, 426.4 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 6899.9 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1036 root 20 0 1529392 224100 67084 R 106.6 3.0 1:41.94 /usr/lib/kodi/kodi.bin --standalone -fs
1004 root 20 0 433284 19916 12940 S 0.7 0.3 0:01.45 /usr/bin/Xorg -nolisten tcp vt01 -s 0 -noreset -allowMou+
1 root 20 0 90564 7164 5504 S 0.0 0.1 0:00.74 /usr/lib/systemd/systemd
598 root 0 -20 0 0 0 D 0.3 0.0 0:00.37 [kworker/u5:2+i915_flip]
5 root 20 0 0 0 0 I 0.3 0.0 0:00.29 [kworker/0:0-events]
153 root 20 0 0 0 0 I 0.0 0.0 0:00.23 [kworker/u4:5-events_unbound]
154 root 20 0 0 0 0 I 0.3 0.0 0:00.19 [kworker/u4:6-events_unbound]
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Playback hardware is a Pentium G3258 with HD Graphics.