Desktop freezing with Plasma 6.8

linux:~ # inxi -Gaz
Graphics:
  Device-1: NVIDIA AD102 [GeForce RTX 4090] driver: nvidia v: 595.104.02
    alternate: nouveau,nvidia_drm non-free: 550-6xx.xx+
    status: current (as of 2026-07) arch: Lovelace code: AD1xx
    process: TSMC n4 (5nm) built: 2022+ pcie: gen: 1 speed: 2.5 GT/s lanes: 16
    link-max: gen: 4 speed: 16 GT/s ports: active: DP-3
    empty: DP-2,DP-4,HDMI-A-2 bus-ID: 01:00.0 chip-ID: 10de:2684
    class-ID: 0300
  Device-2: Advanced Micro Devices [AMD/ATI] Raphael [Radeon 610M]
    vendor: ASUSTeK driver: amdgpu v: kernel arch: RDNA-2 code: Navi-2x
    process: TSMC n7 (7nm) built: 2020-22 pcie: gen: 4 speed: 16 GT/s
    lanes: 16 ports: active: none empty: DP-1,HDMI-A-1,Writeback-1
    bus-ID: 6f:00.0 chip-ID: 1002:164e class-ID: 0300 temp: 37.0 C
  Display: unspecified server: X.org v: 1.21.1.25 with: Xwayland v: 24.1.14
    compositor: kwin_wayland driver: X: loaded: modesetting,nvidia
    unloaded: nouveau,vesa alternate: fbdev,nv dri: radeonsi
    gpu: nv_platform,nvidia,nvidia-nvswitch display-ID: :1 screens: 1
  Screen-1: 0 s-res: 3840x2160 s-dpi: 96 s-size: 1016x571mm (40.00x22.48")
    s-diag: 1165mm (45.88")
  Monitor-1: DP-3 model: LG (GoldStar) Ultra HD serial: <filter> built: 2018
    res: mode: 3840x2160 hz: 60 scale: 100% (1) dpi: 163 gamma: 1.2
    size: 600x340mm (23.62x13.39") diag: 690mm (27.2") ratio: 16:9 modes:
    max: 3840x2160 min: 640x480
  API: EGL v: 1.5 hw: drv: nvidia drv: amd radeonsi platforms: device: 0
    drv: nvidia device: 2 drv: radeonsi device: 3 drv: swrast gbm: drv: nvidia
    surfaceless: drv: nvidia x11: drv: nvidia inactive: wayland,device-1
  API: OpenGL v: 4.6.0 compat-v: 4.6 vendor: nvidia mesa v: 595.104.02
    glx-v: 1.4 direct-render: yes renderer: NVIDIA GeForce RTX 4090/PCIe/SSE2
    memory: 23.43 GiB
  API: Vulkan v: 1.4.363 layers: 3 device: 0 type: discrete-gpu
    name: NVIDIA GeForce RTX 4090 driver: nvidia v: 595.104.02
    device-ID: 10de:2684 surfaces: N/A device: 1 type: integrated-gpu name: AMD
    Ryzen 9 7950X3D 16-Core Processor (RADV RAPHAEL_MENDOCINO)
    driver: mesa radv v: 26.2.5 device-ID: 1002:164e surfaces: N/A device: 2
    type: cpu name: llvmpipe (LLVM 23.1.3 256 bits) driver: mesa llvmpipe
    v: 26.2.5 (LLVM 23.1.3) device-ID: 10005:0000 surfaces: N/A
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor gpu: gputop, intel_gpu_top, lsgpu,
    nvidia-smi wl: wayland-info x11: xdpyinfo, xprop, xrandr

Mod edit: Output as preformatted text.