Terribly slow transcode on modern Intel 265k iGPU

[Jey Forey]

ArrowLake iGPU requires a minimum Linux kernel version of 6.12. Is this already met?

Can you also run "sudo dmesg | grep i915" and check if the output contains FAIL or ERROR?

Thank you for jumping in to help out, you might be my only hope with this. 

I'm running Ubuntu 24.04.3 LTS which I think has kernel 6.14?, This is a new, clean install and I only added rustdesk remote desktop client, samba and docker. 
I don't see any line items with error or fail running the command you mentioned:

    3.323337] i915 0000:00:02.0: [drm] Found meteorlake (device ID 7d67) integrated display version 14.00 stepping D0
[    3.324689] i915 0000:00:02.0: [drm] VT-d active for gfx access
[    3.466026] i915 0000:00:02.0: vgaarb: deactivate vga console
[    3.466057] i915 0000:00:02.0: [drm] Using Transparent Hugepages
[    3.478710] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=io+memwns=io+mem
[    3.484879] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/mtl_dmc.bin (v2.21)
[    3.509566] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/mtl_guc_70.bin version 70.36.0
[    3.519359] i915 0000:00:02.0: [drm] GT0: GUC: submission enabled
[    3.519361] i915 0000:00:02.0: [drm] GT0: GUC: SLPC enabled
[    3.519608] i915 0000:00:02.0: [drm] GT0: GUC: RC enabled
[    3.524026] mei_gsc_proxy 0000:80:16.0-0f73db04-97ab-4125-b893-e904ad0d5464: bound 0000:00:02.0 (ops i915_gsc_proxy_component_ops [i915])
[    3.524451] i915 0000:00:02.0: [drm] GT1: GuC firmware i915/mtl_guc_70.bin version 70.36.0
[    3.524452] i915 0000:00:02.0: [drm] GT1: HuC firmware i915/mtl_huc_gsc.bin version 8.5.4
[    3.776609] i915 0000:00:02.0: [drm] GT1: HuC: excessive auth time: 98ms! [status = 0x0000C1DC, count = 0, ret = 0]
[    3.776618] i915 0000:00:02.0: [drm] GT1: HuC: excessive auth time: [freq = 100MHz, before = 100MHz, perf_limit_reasons = 0x01000100]
[    3.776620] i915 0000:00:02.0: [drm] GT1: HuC: authenticated for clear media
[    3.779713] i915 0000:00:02.0: [drm] GT1: GUC: submission enabled
[    3.779717] i915 0000:00:02.0: [drm] GT1: GUC: SLPC enabled
[    3.779944] i915 0000:00:02.0: [drm] GT1: GUC: RC enabled
[    3.787182] i915 0000:00:02.0: [drm] Protected Xe Path (PXP) protected content support initialized
[    3.831533] [drm] Initialized i915 1.6.0 for 0000:00:02.0 on minor 1
[    3.868677] fbcon: i915drmfb (fb0) is primary device
[    3.868680] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
[    3.868626] snd_hda_intel 0000:80:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[    3.926970] i915 0000:00:02.0: [drm] GT1: Loaded GSC firmware i915/mtl_gsc_1.bin (cv1.0, r102.1.15.1926, svn 1)
[    3.948107] i915 0000:00:02.0: [drm] GT1: HuC: authenticated for all workloads