Screen Shaking with new TV-monitor while playing videos

Hi,
I recently upgraded to a 4k TV and I have that problem that when i watch videos, the whole screen seems to be slightly shaking sometimes.

Here is my config:

System:
  Kernel: 5.11.6-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.11-x86_64 
  root=UUID=e353dce7-7f9f-4b25-a459-ef11f61c16dd rw quiet 
  Desktop: KDE Plasma 5.21.3 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM 
  Distro: Manjaro Linux base: Arch Linux 
Machine:
  Type: Convertible System: LENOVO product: 80X7 v: Lenovo YOGA 720-15IKB 
  serial: <filter> Chassis: type: 31 v: Lenovo YOGA 720-15IKB serial: <filter> 
  Mobo: LENOVO model: LNVNB161216 v: SDK0J40709 WIN serial: <filter> 
  UEFI: LENOVO v: 4MCN33WW(V2.05) date: 07/19/2018 
Battery:
  ID-1: BAT1 charge: 62.4 Wh (97.0%) condition: 64.3/72.0 Wh (89.3%) 
  volts: 12.6 min: 11.6 model: LG PABAS0241231 type: Li-ion serial: <filter> 
  status: Unknown 
Memory:
  RAM: total: 15.37 GiB used: 3.74 GiB (24.3%) 
  RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:
  Info: Quad Core model: Intel Core i5-7300HQ bits: 64 type: MCP 
  arch: Kaby Lake family: 6 model-id: 9E (158) stepping: 9 microcode: DE 
  cache: L2: 6 MiB bogomips: 20004 
  Speed: 849 MHz min/max: 800/2500 MHz Core speeds (MHz): 1: 849 2: 820 3: 891 
  4: 900 
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_perfmon art 
  avx avx2 bmi1 bmi2 bts clflush clflushopt cmov constant_tsc cpuid 
  cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts epb ept ept_ad erms est 
  f16c flexpriority flush_l1d fma fpu fsgsbase fxsr ht hwp hwp_act_window 
  hwp_epp hwp_notify ibpb ibrs ida intel_pt invpcid invpcid_single lahf_lm lm 
  mca mce md_clear mmx monitor movbe mpx msr mtrr nonstop_tsc nopl nx pae pat 
  pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts 
  rdrand rdseed rdtscp rep_good sdbg sep smap smep ss ssbd sse sse2 sse4_1 
  sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc tsc_adjust 
  tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave xsavec xsaveopt 
  xsaves xtopology xtpr 
  Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled 
  Type: mds mitigation: Clear CPU buffers; SMT disabled 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: disabled, RSB filling 
  Type: srbds mitigation: Microcode 
  Type: tsx_async_abort status: Not affected 
Graphics:
  Device-1: Intel HD Graphics 630 vendor: Lenovo driver: i915 v: kernel 
  bus-ID: 00:02.0 chip-ID: 8086:591b class-ID: 0300 
  Device-2: NVIDIA GP107M [GeForce GTX 1050 Mobile] vendor: Lenovo 
  driver: nvidia v: 460.56 alternate: nouveau,nvidia_drm bus-ID: 01:00.0 
  chip-ID: 10de:1c8d class-ID: 0302 
  Device-3: IMC Networks EasyCamera type: USB driver: uvcvideo bus-ID: 1-8:5 
  chip-ID: 13d3:5621 class-ID: 0e02 serial: <filter> 
  Display: x11 server: X.Org 1.20.10 compositor: kwin_x11 driver: 
  loaded: modesetting,nvidia alternate: fbdev,intel,nouveau,nv,vesa 
  display-ID: :0 screens: 1 
  Screen-1: 0 s-res: 4096x2160 s-dpi: 96 s-size: 1082x571mm (42.6x22.5") 
  s-diag: 1223mm (48.2") 
  Monitor-1: DP-1 res: 4096x2160 hz: 60 dpi: 56 size: 1872x1053mm (73.7x41.5") 
  diag: 2148mm (84.6") 
  OpenGL: renderer: Mesa Intel HD Graphics 630 (KBL GT2) v: 4.6 Mesa 20.3.4 
  direct render: Yes 
Audio:
  Device-1: Intel CM238 HD Audio vendor: Lenovo driver: snd_hda_intel 
  v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a171 class-ID: 0403 
  Sound Server-1: ALSA v: k5.11.6-1-MANJARO running: yes 
  Sound Server-2: JACK v: 0.125.0 running: no 
  Sound Server-3: PulseAudio v: 14.2 running: yes 
  Sound Server-4: PipeWire v: 0.3.23 running: yes 
Network:
  Device-1: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel port: 4000 
  bus-ID: 02:00.0 chip-ID: 8086:24fd class-ID: 0280 
  IF: wlp2s0 state: up mac: <filter> 
  IP v4: <filter> type: dynamic noprefixroute scope: global 
  broadcast: <filter> 
  IP v6: <filter> type: noprefixroute scope: link 
  IF-ID-1: tun0 state: unknown speed: 10 Mbps duplex: full mac: N/A 
  IP v4: <filter> type: noprefixroute scope: global broadcast: <filter> 
  IP v6: <filter> type: noprefixroute scope: global 
  WAN IP: <filter> 
Bluetooth:
  Device-1: Intel Bluetooth wireless interface type: USB driver: btusb v: 0.8 
  bus-ID: 1-4:3 chip-ID: 8087:0a2b class-ID: e001 
  Report: This feature requires one of these tools: hciconfig/bt-adapter 
Logical:
  Message: No LVM data was found. 
  Device-1: luks-bb19d502-3ffe-4adf-830e-04282e600dd9 maj-min: 254:0 
  type: LUKS dm: dm-0 size: 953.57 GiB 
  Components: 
  p-1: nvme0n1p2 maj-min: 259:2 size: 953.57 GiB 
RAID:
  Message: No RAID data was found. 
Drives:
  Local Storage: total: 953.87 GiB used: 161.17 GiB (16.9%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Silicon Power 
  model: SPCC M.2 PCIe SSD size: 953.87 GiB block-size: physical: 512 B 
  logical: 512 B speed: 31.6 Gb/s lanes: 4 rotation: SSD serial: <filter> 
  rev: ECFM22.6 temp: 28.9 C scheme: GPT 
  Message: No Optical or Floppy data was found. 
Partition:
  ID-1: / raw-size: 953.57 GiB size: 937.6 GiB (98.33%) 
  used: 161.17 GiB (17.2%) fs: ext4 dev: /dev/dm-0 maj-min: 254:0 
  mapped: luks-bb19d502-3ffe-4adf-830e-04282e600dd9 label: N/A 
  uuid: e353dce7-7f9f-4b25-a459-ef11f61c16dd 
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%) 
  used: 480 KiB (0.2%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 label: N/A 
  uuid: 8973-5C15 
Swap:
  Alert: No Swap data was found. 
Unmounted:
  Message: No Unmounted partitions found. 
USB:
  Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 16 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Device-1: 1-1:2 info: Shenzhen Rapoo RAPOO 5G Wireless Device 
  type: Keyboard,Mouse driver: hid-generic,usbhid interfaces: 2 rev: 2.0 
  speed: 12 Mb/s power: 200mA chip-ID: 24ae:2002 class-ID: 0301 
  Device-2: 1-4:3 info: Intel Bluetooth wireless interface type: Bluetooth 
  driver: btusb interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA 
  chip-ID: 8087:0a2b class-ID: e001 
  Device-3: 1-6:4 info: Synaptics type: <vendor specific> driver: N/A 
  interfaces: 1 rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 06cb:0081 
  class-ID: ff00 serial: <filter> 
  Device-4: 1-8:5 info: IMC Networks EasyCamera type: Video driver: uvcvideo 
  interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA chip-ID: 13d3:5621 
  class-ID: 0e02 serial: <filter> 
  Hub-2: 2-0:1 info: Full speed (or root) Hub ports: 8 rev: 3.0 speed: 5 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
  Hub-3: 3-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Device-1: 3-1:2 info: Realtek BillBoard Device type: Billboard driver: N/A 
  interfaces: 1 rev: 2.0 speed: 12 Mb/s chip-ID: 0bda:2172 class-ID: 1100 
  serial: <filter> 
  Hub-4: 4-0:1 info: Full speed (or root) Hub ports: 2 rev: 3.1 speed: 10 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
Sensors:
  System Temperatures: cpu: 57.5 C mobo: 29.8 C 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 202 Uptime: 30m wakeups: 5 Init: systemd v: 247 tool: systemctl 
  Compilers: gcc: 10.2.0 Packages: pacman: 1402 lib: 431 flatpak: 0 
  Shell: Bash v: 5.1.0 running-in: konsole inxi: 3.3.03

I can’t figure out what it is. I thought maybe bandwidth problem, but the usb-c to HDMI cable supports 4k 60. I tested it also with 1080p resolution and the same problem percists.

It happens not only with videos in browsers, also with videos on the hardrive via celluloid player for example. I checked if it has something to do with hardware videso acceleration and played a youtube video with a codec my system doesn’t support. But it also shakes in that case.

Well f**k me,
the problem was with the TV settings. I had to activate “gaming mode”.
Took me only the whole day to figure that out -.-

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