Bad UI performance, 100% CPU usage, hw accel?

[bast1aan]

Hi, since a recent update it seems my Spotify instance has quite a bad UI performance, and occasionally using 100% CPU. It seems to happen when some widget is showing with moving properties, like a marquee text banner or play icon. Could it be that hardware acceleration within the electron app is default off? I cannot find any setting in the app to enable/disable this.
Running on Kubuntu 20.04 on a Intel(R) Core(TM) i5-5300U CPU / GPU.

$ flatpak list
Spotify                         com.spotify.Client                   1.1.84.716.gc5f8b819 stable      system
Freedesktop Platform            org.freedesktop.Platform             21.08.17.1           21.08       system
Freedesktop Platform            org.freedesktop.Platform             22.08.4              22.08       system
Mesa                            org.freedesktop.Platform.GL.default  21.3.9               21.08       system
Mesa                            org.freedesktop.Platform.GL.default  22.2.4               22.08       system
Mesa (Extra)                    org.freedesktop.Platform.GL.default  22.2.4               22.08-extra system
Intel                           org.freedesktop.Platform.VAAPI.Intel                      21.08       system
Intel                           org.freedesktop.Platform.VAAPI.Intel                      22.08       system
ffmpeg-full                     org.freedesktop.Platform.ffmpeg-full                      21.08       system
ffmpeg-full                     org.freedesktop.Platform.ffmpeg-full                      22.08       system
openh264                        org.freedesktop.Platform.openh264    2.1.0                2.0         system
openh264                        org.freedesktop.Platform.openh264    2.1.0                2.2.0       system

[TingPing]

I don't know if Spotify correctly passes the arguments to Electron but you can try running with the same arguments the Discord package uses to enable GPU usage: https://github.com/flathub/com.discordapp.Discord/blob/master/discord.sh#L9

Like flatpak run com.spotify.Client --enable-gpu-compositing. Briefly testing it here Spotify gives absolutely no feedback about valid or invalid flags.

[bast1aan]

Unfortunately, --enable-gpu-compositing has no effect.

[bast1aan]

I think it is just an issue in Spotify itself, so nothing on flatpak-level can be done about it.
Would be nice if n > 1 can confirm that though.

[TingPing]

It uses like 60% of one CPU core when animations are happening here. Similar actions on their web player in Firefox use 20-40%. Fair to say its not enabling all hwaccel.

[pyclicker]

i just discoverd that clearing cache helps a lot so i suggest you to try it