No, but this event seems to happen most often when I go in/out of fullscreen mode in celluloid (gnome-mpv) while playing a video with subtitles:

feb. 16 10:00:12 host /usr/lib/gdm3/gdm-x-session[1299]: (EE) client bug: timer event7 debounce: scheduled expiry is in the past (-34ms), your system is too slow
feb. 16 10:00:12 host /usr/lib/gdm3/gdm-x-session[1299]: (EE) client bug: timer event7 debounce short: scheduled expiry is in the past (-48ms), your system is too slow
feb. 16 10:03:44 host /usr/lib/gdm3/gdm-x-session[1299]: (EE) client bug: timer event7 debounce: scheduled expiry is in the past (-32ms), your system is too slow
feb. 16 10:03:44 host /usr/lib/gdm3/gdm-x-session[1299]: (EE) client bug: timer event7 debounce short: scheduled expiry is in the past (-45ms), your system is too slow
feb. 16 10:05:50 host /usr/lib/gdm3/gdm-x-session[1299]: (EE) client bug: timer event7 debounce: scheduled expiry is in the past (-2ms), your system is too slow
feb. 16 10:05:50 host /usr/lib/gdm3/gdm-x-session[1299]: (EE) client bug: timer event7 debounce short: scheduled expiry is in the past (-15ms), your system is too slow

I'm not sure if it's related to "nvLock: client timed out, taking the lock" or not, but here's how my last freeze looked in the journal:

feb. 16 09:39:55 host dbus-daemon[1294]: [session uid=1000 pid=1294] Activating service name='io.github.celluloid_player.Celluloid' requested by ':1.100' (uid=1000 pi>
feb. 16 09:39:55 host dbus-daemon[1294]: [session uid=1000 pid=1294] Successfully activated service 'io.github.celluloid_player.Celluloid'
feb. 16 09:42:01 host /usr/lib/gdm3/gdm-x-session[1299]: (EE) client bug: timer event7 debounce: scheduled expiry is in the past (-24ms), your system is too slow
feb. 16 09:42:01 host /usr/lib/gdm3/gdm-x-session[1299]: (EE) client bug: timer event7 debounce short: scheduled expiry is in the past (-37ms), your system is too slow
feb. 16 09:44:18 host kernel: NVRM: GPU at PCI:0000:01:00: GPU-fd72a0ff-d55a-e23d-1169-227134e81d2b
feb. 16 09:44:18 host kernel: NVRM: GPU Board Serial Number: 
feb. 16 09:44:18 host kernel: NVRM: Xid (PCI:0000:01:00): 68, pid=906, CCMDs 00000042 0000c2b0
feb. 16 09:44:20 host kernel: perf: interrupt took too long (3172 > 3140), lowering kernel.perf_event_max_sample_rate to 63000
feb. 16 09:44:29 host /usr/lib/gdm3/gdm-x-session[1299]: nvLock: client timed out, taking the lock
feb. 16 09:44:34 host /usr/lib/gdm3/gdm-x-session[1299]: nvLock: client timed out, taking the lock
feb. 16 09:44:39 host /usr/lib/gdm3/gdm-x-session[1299]: (WW) NVIDIA: Wait for channel idle timed out.
feb. 16 09:44:39 host gnome-shell[1609]: Object .Gjs_AppSwitcherPopup (0x55b758a47860), has been already deallocated — impossible to access it. This might be caused b>
feb. 16 09:44:39 host gnome-shell[1609]: == Stack trace for context 0x55b7580485e0 ==
feb. 16 09:44:39 host gnome-shell[1609]: #0   55b75de9ed20 i   resource:///org/gnome/shell/ui/windowManager.js:2094 (7f1059e3ec10 @ 410)
feb. 16 09:44:39 host gnome-shell[1609]: #1   7ffd012dc2b0 b   self-hosted:981 (7f1059c35670 @ 474)
feb. 16 09:44:39 host gnome-shell[1609]: clutter_actor_destroy: assertion 'CLUTTER_IS_ACTOR (self)' failed
feb. 16 09:44:39 host gnome-shell[1609]: NOTE: Not using GLX TFP!
feb. 16 09:45:11 host gnome-shell[1609]: Window manager warning: last_focus_time (7213510) is greater than comparison timestamp (7205655).  This most likely represent>
feb. 16 09:45:11 host gnome-shell[1609]: pushModal: invocation of begin_modal failed