We should include the following fixes to improve mutters behavior under heavy background IO load:
clutter: fix hole in ClutterPaintNode
clutter: avoid g_signal_emit_by_name() from ClutterActor
clutter: avoid redundant _clutter_paint_node_init_types()
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Moderate: GNOME security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.