Logout when starting a v-sync disabled game

Hey there!
I recently wanted to play some steam games, but as I have a really bad computer I disable v-sync every time. Sadly, if I launch a v-sync disabled game (or disable it), it instantly throws me out of my kde session.

I really don’t know, where this issue could come from.

My inxi -F output:

  Host: robin-manjaro Kernel: 5.17.9-1-MANJARO arch: x86_64 bits: 64
    Desktop: KDE Plasma v: 5.24.5 Distro: Manjaro Linux
  Type: Desktop System: FUJITSU product: ESPRIMO E910 v: N/A
    serial: <superuser required>
  Mobo: FUJITSU model: D3162-A1 v: S26361-D3162-A1
    serial: <superuser required> UEFI: FUJITSU // American Megatrends
    v: R1.23.0 for D3162-A1x date: 12/01/2014
  Info: quad core model: Intel Core i5-3470 bits: 64 type: MCP cache:
    L2: 1024 KiB
  Speed (MHz): avg: 3396 min/max: 1600/3600 cores: 1: 3397 2: 3403 3: 3397
    4: 3390
  Device-1: Intel Xeon E3-1200 v2/3rd Gen Core processor Graphics
    driver: i915 v: kernel
  Display: x11 server: X.Org v: 21.1.3 driver: X: loaded: intel gpu: i915
    resolution: 1920x1080~60Hz
  OpenGL: renderer: Mesa Intel HD Graphics 2500 (IVB GT1)
    v: 4.2 Mesa 22.0.4
  Device-1: Intel 7 Series/C216 Family High Definition Audio
    driver: snd_hda_intel
  Device-2: ZhuHai JieLi BR21 type: USB
    driver: hid-generic,snd-usb-audio,usb-storage,usbhid
  Sound Server-1: ALSA v: k5.17.9-1-MANJARO running: yes
  Sound Server-2: PulseAudio v: 15.0 running: yes
  Device-1: Intel 82579LM Gigabit Network driver: e1000e
  IF: enp0s25 state: up speed: 1000 Mbps duplex: full
    mac: 00:19:99:e8:54:49
  Device-1: Cambridge Silicon Radio Bluetooth Dongle (HCI mode) type: USB
    driver: btusb
  Report: rfkill ID: hci0 state: up address: see --recommends
  Local Storage: total: 447.13 GiB used: 52.25 GiB (11.7%)
  ID-1: /dev/sda vendor: SanDisk model: SSD PLUS 480GB size: 447.13 GiB
  ID-1: / size: 438.75 GiB used: 52.25 GiB (11.9%) fs: ext4 dev: /dev/sda2
  ID-2: /boot/efi size: 299.4 MiB used: 288 KiB (0.1%) fs: vfat
    dev: /dev/sda1
  Alert: No swap data was found.
  System Temperatures: cpu: 29.8 C mobo: 27.8 C
  Fan Speeds (RPM): N/A
  Processes: 225 Uptime: 25m Memory: 15.29 GiB used: 3.98 GiB (26.0%)
  Shell: Zsh inxi: 3.3.16

I’ve installed the steam package.

Thanks in advance.