Memory running full

I have updated the software (zypper dup) around 4 or 5 October after not having done that for 2 months because of not being home.
Since then after a while both my normal memory and the swap memory are completely full which results in a non responsive system.

When I look in system monitor I see nothing which indicates large memory use, except for Calendar Reminders using 1,2GB on the Overview page. On the processes page it is the Brave browser at the top of the list twice with 364 and 333 MB.

Htop shows me confusing info:
13 lines Brave browser with each 3,3% memory use, then 22 times 3,1% followed by 32 times 2,8%. No idea what that means.

During writing this report, memory use has gone up from 6,3GB to 7,5GB already, also swap is being used. What is going on here?

This is my inxi report:

$ inxi -F
  Host: localhost.localdomain Kernel: 6.0.2-1-default arch: x86_64 bits: 64
    Desktop: KDE Plasma v: 5.26.1 Distro: openSUSE Tumbleweed 20221020
  Type: Laptop System: MEDION product: E15302 v: N/A
    serial: <superuser required>
  Mobo: MEDION model: NS15AP serial: <superuser required>
    UEFI: American Megatrends v: AP618_MED_V0.13.2_M00P1T0G0 date: 11/18/2020
  ID-1: BAT0 charge: 44.1 Wh (98.0%) condition: 45.0/45.0 Wh (100.0%)
  Info: quad core model: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
    bits: 64 type: MT MCP cache: L2: 2 MiB
  Speed (MHz): avg: 1446 min/max: 1400/2100 cores: 1: 1373 2: 1352 3: 1221
    4: 2100 5: 1400 6: 1328 7: 1400 8: 1398
  Device-1: AMD Picasso/Raven 2 [Radeon Vega Series / Radeon Mobile Series]
    driver: amdgpu v: kernel
  Display: x11 server: X.Org v: 21.1.4 with: Xwayland v: 22.1.3 driver: X:
    loaded: amdgpu gpu: amdgpu resolution: 1: 1920x1080~60Hz 2: 1920x1080~60Hz
  OpenGL: renderer: AMD Radeon Vega 8 Graphics (raven LLVM 15.0.2 DRM 3.48
    6.0.2-1-default) v: 4.6 Mesa 22.2.1
  Device-1: AMD Raven/Raven2/Fenghuang HDMI/DP Audio driver: snd_hda_intel
  Device-2: AMD ACP/ACP3X/ACP6x Audio Coprocessor driver: snd_pci_acp3x
  Device-3: AMD Family 17h/19h HD Audio driver: snd_hda_intel
  Sound Server-1: ALSA v: k6.0.2-1-default running: yes
  Sound Server-2: PulseAudio v: 16.1 running: yes
  Sound Server-3: PipeWire v: 0.3.59 running: yes
  Device-1: Intel Wireless 3165 driver: iwlwifi
  IF: wlp1s0 state: up mac: 34:cf:f6:40:ff:0b
  IF-ID-1: tun0 state: unknown speed: 10 Mbps duplex: full mac: N/A
  Device-1: Intel Bluetooth wireless interface type: USB driver: btusb
  Report: rfkill ID: hci0 state: up address: see --recommends
  Local Storage: total: 476.94 GiB used: 116.44 GiB (24.4%)
  ID-1: /dev/sda vendor: Phison model: S11-512G-SSD-B27 size: 476.94 GiB
  ID-1: / size: 23.46 GiB used: 15.62 GiB (66.6%) fs: ext4 dev: /dev/sda2
  ID-2: /boot/efi size: 511 MiB used: 4.8 MiB (0.9%) fs: vfat
    dev: /dev/sda1
  ID-3: /home size: 428.52 GiB used: 100.82 GiB (23.5%) fs: ext4
    dev: /dev/sda4
  ID-1: swap-1 type: partition size: 16 GiB used: 4.2 MiB (0.0%)
    dev: /dev/sda3
  System Temperatures: cpu: 61.6 C mobo: N/A gpu: amdgpu temp: 61.0 C
  Fan Speeds (RPM): N/A
  Processes: 320 Uptime: 2h 11m Memory: 13.6 GiB used: 7.34 GiB (54.0%)
  Shell: Bash inxi: 3.3.21
[User: jan] @ [Server: 2a02-a443-5925-1-57ff-1ff1-7e16-1f6a] - [Directory: ~]

I think I found what is wrong. I use a slideshow to change desktop wallpaper pictures. After creating this thread I changed the wallpaper to a fixed one and rebooted the computer. memory use was now stable. After 2 hours or so I still used the same amount of memory as just after boot.
I then reinstated the slideshow with a time frame of just 5 seconds as a test and memory use is increasing again, from just over 2GB to 8.44 right now.
Several years ago I also had problems with the slideshow and somehow it now returned. I will create a bugreport for that.

Thank you.

The problem seems to resurface from time to time… I’ve used a static wallpaper now for a long time to avoid being hit by this.