Video playback using GStreamer very slow compared to X.Org on old computer

I have been experimenting with an old computer and noticed that when playing a video using gst-play-1.0 through Weston/Wayland it was much more laggy than an X.Org session using startx and mwn.

I am running Debian 12 on a single core Intel Pentium 4 at 2793MHz, kernel 6.1.0-17-686-pae i686, Memory 500MB, Dell DE051 model 0CF458, Graphics Intel 82865G Intergted Grapghic, driver i915.

Here are video of playback on each type of session:

X.Org: XOrg

Weston glimagesink: Weston

Weston waylandsink: Weston-waylandsink

Here are logs fromm the gst-play command, although recorded from different runs:

X.Org: XOrg.log

Weston glimagesink: Weston.log

Weston waylandsink: weston-waylandsink.log

GStreamer is using a xvimagesinl on X.Org.

The video uses in available here: https://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_720p_stereo.avi

I would be happy to provide any missing information if requested.

If this is a problem with another non-weston project (GStreamer) then I would be fine with moving this issue to the correct project.