Precisa de ajuda para solucionar o que continua travando

Desktop Ubuntu 21.10, AMD Ryzen 5 3600 (3,6 GHz), 64 GB de RAM

Estou tendo esse problema tanto com Wayland quanto sem.

Comum a todas as situações de travamento é o Firefox (instalação padrão do Snap). Às vezes, apenas o Firefox trava, mas às vezes derruba todo o meu sistema com ele. Às vezes, recebo a tela de relatório de falhas do Firefox, às vezes acabo na tela de login do Ubuntu, às vezes o sistema congela a ponto de apenas uma reinicialização forçada funcionar.

Encontrei a página "about:crashes" no Firefox e acabei de descobrir que as últimas 2 semanas ou mais de relatórios de falhas não foram enviados, então enviei todos eles.

Quando olho para /var/log/syslog, vejo muito que não entendo, mas postarei com prazer se alguém puder me dizer o que procurar.

Desde já, obrigado.

Edições abaixo conforme solicitado. Sem overclock na CPU ou RAM.

ls -al /var/crash

total 12
drwxrwsrwt  2 root     whoopsie 4096 Dec 16 07:38 .
drwxr-xr-x 16 root     root     4096 Dec 15 20:32 ..
-rw-r--r--  1 robert   whoopsie    0 Dec 14 06:46 _usr_lib_xorg_Xorg.1000.upload
-rw-------  1 whoopsie whoopsie   37 Dec 14 06:46 _usr_lib_xorg_Xorg.1000.uploaded

sudo lshw -C memory

  *-firmware
       description: BIOS
       vendor: American Megatrends Inc.
       physical id: 0
       version: P1.70
       date: 12/01/2020
       size: 64KiB
       capacity: 16MiB
       capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
  *-memory
       description: System Memory
       physical id: f
       slot: System board or motherboard
       size: 64GiB
     *-bank:0
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 2133 MHz (0.5 ns)
          product: F4-3200C16-16GVK
          vendor: Unknown
          physical id: 0
          serial: 00000000
          slot: DIMM 0
          size: 16GiB
          width: 64 bits
          clock: 2133MHz (0.5ns)
     *-bank:1
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 2133 MHz (0.5 ns)
          product: F4-3200C16-16GVK
          vendor: Unknown
          physical id: 1
          serial: 00000000
          slot: DIMM 1
          size: 16GiB
          width: 64 bits
          clock: 2133MHz (0.5ns)
     *-bank:2
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 2133 MHz (0.5 ns)
          product: F4-3200C16-16GVK
          vendor: Unknown
          physical id: 2
          serial: 00000000
          slot: DIMM 0
          size: 16GiB
          width: 64 bits
          clock: 2133MHz (0.5ns)
     *-bank:3
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 2133 MHz (0.5 ns)
          product: F4-3200C16-16GVK
          vendor: Unknown
          physical id: 3
          serial: 00000000
          slot: DIMM 1
          size: 16GiB
          width: 64 bits
          clock: 2133MHz (0.5ns)
  *-cache:0
       description: L1 cache
       physical id: 12
       slot: L1 - Cache
       size: 384KiB
       capacity: 384KiB
       clock: 1GHz (1.0ns)
       capabilities: pipeline-burst internal write-back unified
       configuration: level=1
  *-cache:1
       description: L2 cache
       physical id: 13
       slot: L2 - Cache
       size: 3MiB
       capacity: 3MiB
       clock: 1GHz (1.0ns)
       capabilities: pipeline-burst internal write-back unified
       configuration: level=2
  *-cache:2
       description: L3 cache
       physical id: 14
       slot: L3 - Cache
       size: 32MiB
       capacity: 32MiB
       clock: 1GHz (1.0ns)
       capabilities: pipeline-burst internal write-back unified
       configuration: level=3

sysctl vm.swappiness

vm.swappiness = 60

livre -h

               total        used        free      shared  buff/cache   available
Mem:            62Gi       5.6Gi       1.2Gi       179Mi        55Gi        56Gi
Swap:           71Gi        17Mi        71Gi

swapon -s

Filename                Type        Size    Used    Priority
/dev/sdb1            partition  75497468    17536   -2

ATUALIZADO 2021-12-19

ls -al /var/crash

total 3204
drwxrwsrwt  2 root     whoopsie    4096 Dec 19 12:41 .
drwxr-xr-x 16 root     root        4096 Dec 19 12:38 ..
-rw-r--r--  1 robert   whoopsie       0 Dec 19 12:41 _opt_google_chrome_chrome.1000.upload
-rw-------  1 whoopsie whoopsie      37 Dec 19 12:41 _opt_google_chrome_chrome.1000.uploaded
-rw-r--r--  1 robert   whoopsie       0 Dec 19 12:41 _usr_bin_gnome-shell.1000.upload
-rw-------  1 whoopsie whoopsie      37 Dec 19 12:41 _usr_bin_gnome-shell.1000.uploaded
-rw-r-----  1 robert   whoopsie 3254690 Dec 19 12:41 _usr_bin_Xwayland.1000.crash
-rw-r--r--  1 robert   whoopsie       0 Dec 19 12:41 _usr_bin_Xwayland.1000.upload
-rw-------  1 whoopsie whoopsie      37 Dec 19 12:41 _usr_bin_Xwayland.1000.uploaded
-rw-r--r--  1 robert   whoopsie       0 Dec 14 06:46 _usr_lib_xorg_Xorg.1000.upload
-rw-------  1 whoopsie whoopsie      37 Dec 14 06:46 _usr_lib_xorg_Xorg.1000.uploaded

ls -al ~/.local/share/gnome-shell/extensions

total 16
drwxrwxr-x 4 robert robert 4096 Dec 13 11:52 .
drwx------ 4 robert robert 4096 Dec 19 16:19 ..
drwxrwxr-x 4 robert robert 4096 Dec 14 06:47 [email protected]
drwxrwxr-x 5 robert robert 4096 Dec  3 08:19 [email protected]

ls -al /usr/share/gnome-shell/extensions

total 20
drwxr-xr-x 5 root root 4096 May 14  2021 .
drwxr-xr-x 7 root root 4096 Oct 16 19:13 ..
drwxr-xr-x 2 root root 4096 Oct 16 18:49 [email protected]
drwxr-xr-x 3 root root 4096 Oct 16 18:49 [email protected]
drwxr-xr-x 3 root root 4096 Oct 16 18:50 [email protected]