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

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
```