Please recommend parameters for software decode/play_back

Important Information

Provide following Information:

• mpv version 0.38.0
• Linux Distribution and Version : Ubuntu 22.04 LTS
• Source of the mpv binary : from third party : https://ppa.launchpadcontent.net/ubuntuhandbook1/mpv/ubuntu/pool/main/m/mpv/mpv_0.38.0-0ubuntu1~jammy_arm64.deb
• If known which version of mpv introduced the problem : not sure
• Window Manager and version : Wayland Gnome 42.9
• GPU model, driver and version : Mali-G31 ( Panfrost )
• Possible screenshot or video of visual glitches : not avail.

Reproduction steps

play the video with : mpv --log-file=./loga.txt ./test.mkv

Expected behavior

The video is played smoothly.

Actual behavior

Occasional black screen. Sudden mute in audio sometimes.

I tried the latest mpv at my embeded device ( similiar to s905x with 2G ddr3 , but its GPU is Mali-G31 instead of mali450 )
and find out its effect is far way from satisfaction .
Even though there is still quite a lot of hardware margin during mpv running :
%Cpu(s): 11.9 us, 2.4 sy, 0.0 ni, 85.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 1939.3 total, 644.0 free, 547.2 used, 748.1 buff/cache
MiB Swap: 969.6 total, 969.6 free, 0.0 used. 1098.0 avail Mem

My setting ( /etc/mpv/mpv.conf ) :
hwdec=no
vo=gpu-next
gpu-context=wayland
profile=sw-fast
scale=bilinear
osc=no
load-scripts=no
input-vo-keyboard=no
fs=yes

Log file

https://pastebin.com/8HqLYEnP

Sample files

https://raw.githubusercontent.com/trump-7575/opencv/master/test
Please add extension "mkv" to the test clip.

No source file or test is named. Start by reproducing the supplied mpv 0.38.0 command with the linked sample and reviewing the linked log alongside /etc/mpv/mpv.conf; done means establishing whether the black screen and audio mute are reproducible and documenting a supported configuration or a clear diagnosis.