(SOLVED)full screen videos in firefox not as smooth

[Boki007]

Hello guys. First of all i have to say SPARKY is very good indeed. i am super happy and grateful to the team that made it. I installed it with openbox. It is very beautiful and simple. Everything works out of the box.
I only have one problem that i don't know how to improve. The full screen videos in firefox are not smooth. Especially when the movie is panning left or right. It is ok in mpv player when watching a movie from a file, but youtube on firefox is not as good. It works, but i have compared to mx linux (latest) and it is smoother there. I have an old computer, on newer it may not be noticable.

i have checked with inxi on both and there is hardly any difference, except kernel version 5.14(sparky) vs 5.10(mx). Is there anything i can do to improve the videos a little?

my output:

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System:
  Host: borut-pc Kernel: 5.14.0-2-amd64 x86_64 bits: 64
  Desktop: Openbox 3.6.1 Distro: SparkyLinux 7 (Orion-Belt)
Machine:
  Type: Desktop Mobo: ZOTAC model: ION serial: <superuser required>
  BIOS: American Megatrends v: 080015 date: 10/18/2010
CPU:
  Info: Dual Core model: Intel U2300 bits: 64 type: MCP cache: L2: 1024 KiB
  Speed: 1200 MHz min/max: N/A Core speeds (MHz): 1: 1200 2: 1200
Graphics:
  Device-1: NVIDIA C79 [ION] driver: nouveau v: kernel
  Device-2: Logitech Webcam C170 type: USB driver: snd-usb-audio,uvcvideo
  Display: x11 server: X.Org 1.20.11 driver: loaded: modesetting
  unloaded: fbdev,vesa resolution: 1920x1080~60Hz
  OpenGL: renderer: NVAC v: 3.3 Mesa 20.3.5
Audio:
  Device-1: NVIDIA MCP79 High Definition Audio driver: snd_hda_intel
  Device-2: Logitech Webcam C170 type: USB driver: snd-usb-audio,uvcvideo
  Sound Server-1: ALSA v: k5.14.0-2-amd64 running: yes
  Sound Server-2: PulseAudio v: 15.0 running: yes
Network:
  Device-1: NVIDIA MCP79 Ethernet driver: forcedeth
  IF: eth0 state: up speed: 1000 Mbps duplex: full mac: 00:01:2e:2b:bb:88
  Device-2: Ralink RT2790 Wireless 802.11n 1T/2R PCIe driver: rt2800pci
  IF: wlan0 state: down mac: 0e:2c:ad:ca:b7:31
Bluetooth:
  Device-1: Cambridge Silicon Radio Bluetooth Dongle (HCI mode) type: USB
  driver: btusb
  Report: hciconfig ID: hci0 state: up address: 00:1B:DC:0F:D8:A6 bt-v: 1.2
Drives:
  Local Storage: total: 2.09 TiB used: 1014.28 GiB (47.3%)
  ID-1: /dev/sda vendor: Crucial model: CT240BX500SSD1 size: 223.57 GiB
  ID-2: /dev/sdb type: USB vendor: Western Digital model: WD10JMVW-11AJGS3
  size: 931.48 GiB
  ID-3: /dev/sdc type: USB vendor: SanDisk model: Ultra size: 57.84 GiB
  ID-4: /dev/sdd type: USB vendor: Seagate model: ST1000LM024 HN-M101MBB
  size: 931.51 GiB
Partition:
  ID-1: / size: 219 GiB used: 14.84 GiB (6.8%) fs: ext4 dev: /dev/sda1
Swap:
  Alert: No swap data was found.
Sensors:
  System Temperatures: cpu: 59.0 C mobo: N/A gpu: nouveau temp: 53.0 C
  Fan Speeds (RPM): N/A
Repos:
  Active apt repos in: /etc/apt/sources.list
  1: deb http://deb.debian.org/debian/ bookworm main contrib non-free
  2: deb-src http://deb.debian.org/debian/ bookworm main contrib non-free
  3: deb http://security.debian.org/debian-security/ bookworm-security/updates main non-free contrib
  4: deb-src http://security.debian.org/debian-security/ bookworm-security/updates main contrib non-free
  5: deb http://deb-multimedia.org/ bookworm main non-free
  No active apt repos in: /etc/apt/sources.list.d/dropbox.list
  No active apt repos in: /etc/apt/sources.list.d/liquorix.list
  No active apt repos in: /etc/apt/sources.list.d/sid.list
  Active apt repos in: /etc/apt/sources.list.d/sparky-unstable.list
  1: deb https://repo.sparkylinux.org/ unstable main
  2: deb-src https://repo.sparkylinux.org/ unstable main
  Active apt repos in: /etc/apt/sources.list.d/sparky.list
  1: deb https://repo.sparkylinux.org/ core main
  2: deb-src https://repo.sparkylinux.org/ core main
  3: deb https://repo.sparkylinux.org/ orion main
  4: deb-src https://repo.sparkylinux.org/ orion main
  Active apt repos in: /etc/apt/sources.list.d/teams.list
  1: deb [arch=amd64] https://packages.microsoft.com/repos/ms-teams stable main
Info:
  Processes: 156 Uptime: 44m Memory: 7.52 GiB used: 1.19 GiB (15.8%)
  Shell: Bash inxi: 3.3.07


Thank you for your help and advice. Boki

[Boki007]

I may just give an answer to myself. At the end i have installed Vivaldi browser which plays videos in full screen very well. At first i was reluctant, since i wanted to use Firefox, but it is just wasn't good. Now i am super happy with everything. The best OS for me.