Fps drops almost to zero after few minutes

System:
  Kernel: 5.15.76-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-5.15-x86_64
    root=UUID=de406ee5-b06e-4029-8c04-81ebf3c50a75 rw quiet mitigations=off
    acpi_osi=Linux "acpi_osi=!Windows 2012" acpi_backlight=vendor
    dm_mod.use_blk_mq=1 nowatchdog nvidia-drm.modeset=1 udev.log_priority=3
  Desktop: KDE Plasma v: 5.26.2 tk: Qt v: 5.15.6 wm: kwin_x11 vt: 1 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop Mobo: Gigabyte model: EP31-DS3L serial: <superuser required>
    BIOS: Award v: FC date: 09/16/2008
CPU:
  Info: model: Intel Core2 Quad Q9550 bits: 64 type: MCP arch: Penryn
    level: v1 built: 2008 process: Intel 45nm family: 6 model-id: 0x17 (23)
    stepping: 0xA (10) microcode: 0xA0B
  Topology: cpus: 1x cores: 4 smt: <unsupported> cache: L1: 256 KiB
    desc: d-4x32 KiB; i-4x32 KiB L2: 12 MiB desc: 2x6 MiB
  Speed (MHz): avg: 3605 min/max: N/A cores: 1: 3605 2: 3605 3: 3605 4: 3605
    bogomips: 28845
  Flags: ht lm nx pae sse sse2 sse3 sse4_1 ssse3 vmx
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf mitigation: PTE Inversion; VMX: EPT disabled
  Type: mds status: Vulnerable; SMT disabled
  Type: meltdown status: Vulnerable
  Type: mmio_stale_data status: Unknown: No mitigations
  Type: retbleed status: Not affected
  Type: spec_store_bypass status: Vulnerable
  Type: spectre_v1 status: Vulnerable: __user pointer sanitization and
    usercopy barriers only; no swapgs barriers
  Type: spectre_v2 status: Vulnerable, STIBP: disabled, PBRSB-eIBRS: Not
    affected
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: NVIDIA GM206 [GeForce GTX 960] driver: nvidia v: 470.141.03
    alternate: nouveau,nvidia_drm non-free: 520.xx+
    status: current (as of 2022-10) arch: Maxwell code: GMxxx
    process: TSMC 28nm built: 2014-19 pcie: gen: 1 speed: 2.5 GT/s lanes: 16
    ports: active: none off: HDMI-A-1 empty: DP-1,DVI-D-1,DVI-I-1
    bus-ID: 01:00.0 chip-ID: 10de:1401 class-ID: 0300
  Display: x11 server: X Org v: 21.1.4 compositor: kwin_x11 driver: X:
    loaded: nvidia gpu: nvidia,nvidia-nvswitch display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 101 s-size: 483x272mm (19.02x10.71")
    s-diag: 554mm (21.82")
  Monitor-1: HDMI-A-1 mapped: HDMI-0 note: disabled model: Samsung S22E390
    serial: <filter> built: 2015 res: 1920x1080 hz: 60 dpi: 102 gamma: 1.2
    size: 477x268mm (18.78x10.55") diag: 547mm (21.5") ratio: 16:9 modes:
    max: 1920x1080 min: 640x480
  API: OpenGL v: 4.6.0 NVIDIA 470.141.03 renderer: NVIDIA GeForce GTX
    960/PCIe/SSE2 direct render: Yes
Audio:
  Device-1: Intel NM10/ICH7 Family High Definition Audio
    vendor: Gigabyte GA-D525TUD driver: snd_hda_intel v: kernel bus-ID: 5-2:2
    bus-ID: 00:1b.0 chip-ID: 0951:16ed class-ID: 0300 chip-ID: 8086:27d8
    class-ID: 0403 serial: <filter>
  Device-2: NVIDIA GM206 High Definition Audio driver: snd_hda_intel
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 16 bus-ID: 01:00.1
    chip-ID: 10de:0fba class-ID: 0403
  Device-3: Kingston HyperX Cloud Alpha S type: USB
    driver: hid-generic,snd-usb-audio,usbhid
  Sound API: ALSA v: k5.15.76-1-MANJARO running: yes
  Sound Server-1: JACK v: 1.9.21 running: no
  Sound Server-2: PulseAudio v: 16.1 running: yes
  Sound Server-3: PipeWire v: 0.3.59 running: yes
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Gigabyte driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s
    lanes: 1 port: d000 bus-ID: 03:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp3s0 state: up speed: 100 Mbps duplex: full mac: <filter>
Drives:
  Local Storage: total: 530.98 GiB used: 26.06 GiB (4.9%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: Crucial model: CT250MX500SSD1
    size: 232.89 GiB block-size: physical: 4096 B logical: 512 B
    speed: <unknown> type: SSD serial: <filter> rev: 023 scheme: MBR
  ID-2: /dev/sdb maj-min: 8:16 vendor: Hitachi model: HDT725032VLA360
    size: 298.09 GiB block-size: physical: 512 B logical: 512 B speed: <unknown>
    type: N/A serial: <filter> rev: A7EA scheme: MBR
Partition:
  ID-1: / raw-size: 68.34 GiB size: 66.71 GiB (97.62%) used: 26.06 GiB (39.1%)
    fs: ext4 dev: /dev/sda1 maj-min: 8:1
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
  ID-1: swap-1 type: file size: 5 GiB used: 0 KiB (0.0%) priority: -2
    file: /swapfile
Sensors:
  System Temperatures: cpu: 51.0 C mobo: N/A gpu: nvidia temp: 49 C
  Fan Speeds (RPM): N/A gpu: nvidia fan: 26%
Info:
  Processes: 178 Uptime: 1h 55m wakeups: 0 Memory: 3.83 GiB
  used: 2.1 GiB (54.8%) Init: systemd v: 251 default: graphical
  tool: systemctl Compilers: gcc: 12.2.0 clang: 14.0.6 Packages: pm: pacman
  pkgs: 1261 libs: 347 tools: pamac pm: flatpak pkgs: 0 Shell: Zsh v: 5.9
  default: Bash v: 5.1.16 running-in: konsole inxi: 3.3.23

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